This is Nagi no Asukara. Manaka, Hikari, Chisaki, and Kaname are all childhood friends who live underwater. After their school is shut down, they go to the surface school where they meet Tsumugu, a boy in which Manaka falls in love with. Manaka is in love with Tsumugu, Hikari loves Manaka, Chisaki loves Hikari, and Kaname loves Chisaki. With these feelings, drama is bound to happen. With beautiful animation and an amazing storyline, this anime is bound to capture your heart. Genres are:Romance, Drama, Comedy