The fourth season of Kanojo, Okarishimasu.

Kazuya’s ready to confess with the lush paradise of Hawaii as a backdrop. But renting Chizuru for the dream trip turns into a war zone of love due to Ruka’s aggressive advances and Mami’s scheming. Despite the chaos, this is Kazuya’s moment to bare his heart. Will his words reach Chizuru? And if they do, what will she even say?

(Source: Crunchyroll)