The Angel Next Door Spoils Me Rotten (お隣の天使様にいつの間にか駄目人間にされていた件) is a Japanese light novel series written by Saekisan and illustrated by Hanekoto. Originally published online on Shōsetsuka ni Narō, SB Creative has released 12 volumes of the series under their GA Bunko label since June 2019. Yen Press holds the license to publish the series in North America in English. A manga adaptation with art by Wan Shibata and composition by Suzu Yūki has been serialized via Square Enix's online manga magazine Manga Up! since January 2022. As of October 2025, its chapters have been collected in six volumes. An anime television series adaptation produced by Project No.9 aired from January to March 2023. A second season premiered in April 2026.
Plot
Amane Fujimiya, a lonely and stoic high school boy, lives alone in an apartment, and the most beautiful girl in school, Mahiru Shiina, lives just next door, to which they are initially unaware of. They have almost never spoken despite being in the same class—until the day he sees her in distress on a rainy day and lends her his umbrella. To return the favor, she offers him help around the house, and before they realize, a relationship slowly begins to blossom as the distance between them closes.