Need I say anything.

Nagito Komaeda and Hajime Hinata are high schoolers attending Hope's Peak Academy. On their first day, a magical rabbit named Usami, who asks them, along with 14 other high school students, to live a peaceful life on the tropical Jabberwock Island, they meet each other and decide to become friends. But Hajime and Nagito have a special connection that none of the others would ever be able to suspect. The duo quickly became close friends, and then best friends, and hope to become more. Both of them have had feelings for each other for weeks, but neither of them have ever acted upon them. They've never revealed their affection for each other. And that is where this story starts. The last few days before one of them builds up the courage to admit how they feel toward one another.