In the near future, a Virtual Reality Massive Multiplayer Online Role-Playing Game (VRMMORPG) called Sword Art Online has been released where players control their avatars with their bodies using a piece of technology called Nerve Gear. One day, players discover they cannot log out, as the game creator is holding them captive unless they reach the 100th floor of the game's tower and defeat the final boss. However, if they die in the game, they die in real life. Their struggle for survival starts now... 
(Source: Crunchyroll)

Piano prodigy Arima Kousei dominated the competition and all child musicians knew his name. But after his mother, who was also his instructor, passed away, he had a mental breakdown while performing at a recital. This resulted in him no longer being able to hear the sound of his piano playing. Two years later, Kousei hasn’t touched the piano and views the world without any flair or color. He was content at living out his life with his good friends Tsubaki and Watari until, one day, a girl changed everything. Miyazono Kaori is a pretty, free spirited violinist whose playing style reflects her personality. Kaori helps Kousei return to the music world and show that it should be free and mold breaking unlike the structured and rigid style Kousei was used to.

In the story, Subaru Natsuki is an ordinary high school student who is lost in an alternate world, where he is rescued by a beautiful, silver-haired girl. He stays near her to return the favor, but the destiny she is burdened with is more than Subaru can imagine. Enemies attack one by one, and both of them are killed. He then finds out he has the power to rewind death, back to the time he first came to this world. But only he remembers what has happened since. 
 
(Source: Anime News Network)
 
Notes: 
- The first episode aired with a runtime of ~50 minutes as opposed to the standard 25 minute long episode. 
- In the Winter 2020 season, Re:ZERO was rebroadcast and re-edited to fit into an hour time-slot. This edit included the first OVA and added slight modifications to certain scenes throughout. It also added an additional scene at the end of the final episode.

There's a rumor about a mysterious phenomenon called "puberty syndrome." For example, Sakuta Azusagawa is a high school student who suddenly sees a bunny girl appear in front of him. The girl is actually a girl named Mai Sakurajima, who is Sakuta's upperclassman who is also a famous actress who has gone on hiatus from the entertainment industry. For some reason, the people around Mai cannot see her bunny-girl figure. Sakuta sets out to solve this mystery, and as he spends time with Mai, he learns her secret feelings. Other heroines who have "puberty syndrome" start to appear in front of Sakuta. 
(Source: Anime News Network)

Known for being both brilliant and powerful, Miyuki Shirogane and Kaguya Shinomiya lead the illustrious Shuchiin Academy as near equals. And everyone thinks they’d make a great couple. Pride and arrogance are in ample supply, so the only logical move is to trick the other into instigating a date! Who will come out on top in this psychological war where the first move is the only one that matters?
 
(Source: Aniplex)

Ryuuji Takasu is a gentle high school student with a love for housework; but in contrast to his kind nature, he has an intimidating face that often gets him labeled as a delinquent. On the other hand is Taiga Aisaka, a small, doll-like student, who is anything but a cute and fragile girl. Equipped with a wooden katana and feisty personality, Taiga is known throughout the school as the "Palmtop Tiger."
 
One day, an embarrassing mistake causes the two students to cross paths. Ryuuji discovers that Taiga actually has a sweet side: she has a crush on the popular vice president, Yuusaku Kitamura, who happens to be his best friend. But things only get crazier when Ryuuji reveals that he has a crush on Minori Kushieda—Taiga's best friend!
 
Toradora! is a romantic comedy that follows this odd duo as they embark on a quest to help each other with their respective crushes, forming an unlikely alliance in the process.

The distant future: Humanity established the mobile fort city, Plantation, upon the ruined wasteland. Within the city were pilot quarters, Mistilteinn, otherwise known as the “Birdcage.” That is where the children live... Their only mission in life was the fight. Their enemies are the mysterious giant organisms known as Kyoryu. The children operate robots known as FRANXX in order to face these still unseen enemies. Among them was a boy who was once called a child prodigy: Code number 016, Hiro. One day, a mysterious girl called Zero Two appears in front of Hiro. “I’ve found you, my Darling.”
 
(Source: Crunchyroll)

A secret life is the one thing they have in common. At school, Hori is a prim and perfect social butterfly, but the truth is she's a brash homebody. Meanwhile, under a gloomy facade, Miyamura hides a gentle heart, along with piercings and tattoos. In a chance meeting, they both reveal a side they've never shown. Could this blossom into something new? 
 
(Source: Funimation)

Takemichi Hanagaki is a freelancer that's reached the absolute pits of despair in his life. He finds out that the only girlfriend he ever had in his life that he dated in middle school, Hinata Tachibana, had been killed by the ruthless Tokyo Manji Gang. 
 
The day after hearing about her death, he's standing on the station platform and ends up being pushed over onto the tracks by a herd of people. He closes his eyes thinking he's about to die, but when he opens his eyes back up, he somehow had gone back in time 12 years. 
 
Now that he's back living the best days of his life, Takemichi decides to get revenge on his life by saving his girlfriend and changing himself that he'd been running away from. 
 
(Source: Crunchyroll)

After a slow but eventful summer vacation, Shuchiin Academy's second term is now starting in full force. As August transitions into September, Miyuki Shirogane's birthday looms ever closer, leaving Kaguya Shinomiya in a serious predicament as to how to celebrate it. Furthermore, the tenure of the school's 67th student council is coming to an end. Due to the council members being in different classes, the only time Kaguya and Miyuki have to be together will soon disappear, putting all of their cunning plans at risk. 

A long and difficult election that will decide the fate of the new student council awaits, as multiple challengers fight for the coveted title of president.

The story centers around the special abilities that occur among a small percentage of boys and girls in puberty. Yuu Otosaka uses his power without others knowing, and lives a fairly normal, average school life. Before him suddenly appears a girl, Nao Tomori. Due to his meeting with her, the fate of special power-users will be exposed. 
 
(Source: Anime News Network)

Jinta Yadomi and his group of childhood friends have become estranged after a tragic accident split them apart. Now in their high school years, a sudden surprise forces each of them to confront their guilt over what happened that day and come to terms with the ghosts of their past. 
(Source: NIS America)

Devil King Sadao is only one step away from conquering the world when he is beaten by Hero Emilia and forced to drift to the other world: modern-day Tokyo. As "conquering the world" are the only skills the Devil King possesses&mdash;and are obviously unnecessary in his new situation&mdash;he must work as a freeter to pay for his living expenses! 

Some adventurers delve into the sprawling labyrinths beneath the city of Orario to find fame and fortune. Others come to test their skills against the legions of monsters lurking in the darkness below. However, Bell Cranel’s grandfather told him a different reason: it’s a great place to rescue (and subsequently meet) girls! Now that Bell’s a dungeon delver himself, the ladies he’s encountering aren’t the helpless damsels in distress he’d imagined, and one of them, the beautiful swordswoman Ais Wallenstein, keeps rescuing Bell instead. As embarrassing as that is, it’s nothing compared to what happens when goddesses get involved. Freya, Hephaistos, and Loki, with their powerful Familias, are intimidating enough, but there’s one goddess whose relationship with Bell is certain to spark trouble. 
 
(Source: Sentai Filmworks)

This romantic comedy revolves around an antisocial high school student named Hikigaya Hachiman with a distorted view on life and no friends or girlfriend. When he sees his classmates talking excitedly about living their adolescent lives, he mutters: "They're a bunch of liars." When he is asked about his future dreams, he responds: "Not working." A teacher gets Hachiman to join the 'Volunteer Service' club, which happens to have the school's prettiest girl: Yukinoshita Yukino. 
(Source: Anime News Network)

In a far away future, mankind lives underground in huge caves, unknowing of a world above with a sky and stars. 
In the small village of Jiha, Simon, a shy boy who works as a digger discovers a strange glowing object during excavation. The enterprising Kamina, a young man with a pair of rakish sunglasses and the passion of a firey sun, befriends Simon and forms a small band of brothers, the Gurren Brigade, to escape the village and break through the ceiling of the cave to reach the surface, which few believe exist. 
The village elder won't hear of such foolishness and punishes the Brigade. However, when disaster strikes from the world above and the entire village is in jeopardy, it's up to Simon, Kamina, a girl with a big gun named Yoko, and the small yet sturdy robot, Lagann, to save the day. 
The new friends journey to the world above and find that the surface is a harsh battlefield, and it's up to them to fight back against the rampaging Beastmen to turn the tide in the humans' favor! Pierce the heavens, Gurren Lagann!

Energy-conservative high school student Houtarou Oreki ends up with more than he bargained for when he signs up for the Classic Literature Club at his sister's behest—especially when he realizes how deep-rooted the club's history really is. Begrudgingly, Oreki is dragged into an investigation concerning the 45-year-old mystery that surrounds the club room. 
 
Accompanied by his fellow club members, the knowledgeable Satoshi Fukube, the stern but benign Mayaka Ibara, and the ever-curious Eru Chitanda, Oreki must combat deadlines and lack of information with resourcefulness and hidden talent, in order to not only find the truth buried beneath the dust of works created years before them, but of other side cases as well. 
 
Based on the award-winning Koten-bu light novel series, and directed by Yasuhiro Takemoto of Suzumiya Haruhi no Shoushitsu, Hyouka shows that normal life can be full of small mysteries, be it family history, a student film, or even the withered flowers that make up a ghost story. 
 
(Source: MAL Rewrite)

High schooler Wakana Gojou cares about one thing: making Hina dolls. With nobody to share his obsession, he has trouble finding friends—or even holding conversation. But after the school’s most popular girl, Marin Kitagawa, reveals a secret of her own, he discovers a new purpose for his sewing skills. Together, they’ll make her cosplay dreams come true! 
 
(Source: Funimation)

Everybody has had that stage in their life where they have thought themselves to be special, different from the masses of ordinary humans. They might go as far as seeing themselves capable of wielding mystical powers, or maybe even believe themselves to have descended from a fantasy realm. This "disease" is known as "chuunibyou" and is often the source of some of the most embarrassing moments of a person's life.
 
For Yuuta Togashi, the scars that his chuunibyou has left behind are still fresh. Having posed as the "Dark Flame Master" during his middle school years, he looks back at those times with extreme embarrassment, so much so that he decides to attend a high school far away where nobody will recognize him. Putting his dark history behind him, he longs to live a normal high school life.
 
Unfortunately, he hasn't escaped his past yet: enter Rikka Takanashi, Yuuta's new classmate and self-declared vessel of the "Wicked Eye." As this eccentric young girl crashes into Yuuta's life, his dream of an ordinary, chuunibyou-free life quickly crumbles away. In this hilarious and heartwarming story of a boy who just wants to leave his embarrassing memories behind, the delusions of old are far from a thing of the past.
 
(Source: MAL Rewrite)

First season of the Monogatari Series, part 1/6. Contains the arcs Hitagi Crab, Mayoi Snail, Suruga Monkey, Nadeko Snake, and Tsubasa Cat from the Bakemonogatari light novels. 
Thanks to Meme Oshino, Koyomi Araragi, a high school student, is able to remain a human after coming across a female vampire... However, since the incident, Koyomi seems to meet girls who have an apparition-related issue. Hitagi Senjougahara doesn’t weigh anything, Suruga Kanbaru’s right arm becomes like that of a monkey’s, and a young girl, Mayoi, cannot find her way home no matter how many times she tries. Koyomi, a Mr. Nice Guy, ends up helping each and every girl solve her problem with the help of Meme Oshino.
 
(Source: Aniplex)

Having slept through all four of her alarms, the energetic Narumi Momose finds herself running late for her first day of work at a new office. As she races to catch her train, she makes a promise to herself that none of her coworkers will find out about her dark secret: that she is an otaku and a fujoshi. Her plan goes instantly awry, though, when she runs into Hirotaka Nifuji, an old friend from middle school. Although she tries to keep her secret by inviting him out for drinks after work, her cover is blown when he casually asks her whether or not she will be attending the upcoming Summer Comiket. Luckily for her, the only witnesses—Hanako Koyanagi and Tarou Kabakura—are otaku as well. 
 
Later that night, the pair go out for drinks so that they can catch up after all the years apart. After Narumi complains about her previous boyfriend breaking up with her because he refused to date a fujoshi, Hirotaka suggests that she try dating a fellow otaku, specifically himself. He makes a solemn promise to always be there for her, to support her, and to help her farm for rare drops in Monster Hunter. Blown away by the proposal, Narumi agrees immediately. Thus the two otaku start dating, and their adorably awkward romance begins. 
 
(Source: MAL Rewrite)

Kinoshita Kazuya is a 20-year-old failure of a college student. He managed to kiss his girlfriend once, but was dumped after a month. "Ugh... Damn it. I never want to go through that again." 
 
Completely spiteful, Kazuya uses a certain method to date a girl. He goes to their meeting place and suddenly hears, "You're Kazuya-kun, right?" A beautiful girl brushing her long, black hair behind her ear was there, smiling at him. Her name was Mizuhara Chizuru. Something real is born after just a single rental! A reckless rom-com filled with love and excitement is about to begin!
 
(Source: Crunchyroll)

Issei Hyodo is your average perverted high school student whose one wish in life is to have his own harem, but he's got to be one of the unluckiest guys around. He goes on his first date with a girl only to get brutally attacked and killed when it turns out the girl is really a vicious fallen angel. To top it all off, he's later reincarnated as a devil by his gorgeous senpai who tells him that she is also a devil and now his master! One thing's for sure, his peaceful days are over. In a battle between devils and angels, who will win? 
(Source: FUNimation)

Tohru Honda thought her life was headed for misfortune when a family tragedy left her living in a tent. When her small home is discovered by the mysterious Soma clan, she suddenly finds herself living with Yuki, Kyo, and Shigure Soma. But she quickly learns their family has a bizarre secret of their own: when hugged by the opposite sex, they turn into the animals of the Zodiac!
 
(Source: Crunchyroll)