Kono Heya de, Bokura wa.

In this heartwarming and poignant coming-of-age romance, high school student Azusa Mikazuki's life takes an unexpected turn when he moves into a mysterious, old mansion that once belonged to a famous author. By some strange coincidence, he discovers that the mansion has been inherited by him, and he is invited to live there by the author's daughter, who is now a beautiful and intelligent woman. As Azusa becomes embroiled in the lives of the mansion's inhabitants, he learns about love, friendship, and the true meaning of home, all while navigating the complexities of his own feelings for the enigmatic and captivating woman who has taken him under her wing.