アイベヤ THE ANIMATION

With his parents abroad and his house in renovation all of a sudden, Kouta Kazama ends up staying at the home of his neighbor, Aki Hayama, sharing a room with her. Being childhood friends, they used to be very close, but now, as a man and woman sleeping together, it might not take too long for them to realize their true feelings for each other. (Source: MAL Rewrite)