A first-year high school student who began living alone at the start of the semester. He is poor at every type of housework and leads a self-indulgent life. He has few friends and tends to put himself down.

Amane lives alone in an apartment, and the most beautiful girl in school, Mahiru, lives just next door. They've almost never spoken&mdash;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 a relationship slowly begins to blossom as the distance between them closes... 
 
(Source: Yen Press)

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Amane lives alone in an apartment, and the most beautiful girl in school, Mahiru, lives just next door. They've almost never spoken&mdash;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 a relationship slowly begins to blossom as the distance between them closes...
 
(Source: Yen Press)

The second season of Otonari no Tenshi-sama ni Itsunomanika Dame Ningen ni Sareteita Ken.

Amane Fujimiya lives alone in a messy apartment&mdash;right next door to Mahiru Shiina, a veritable "angel" who's the smartest, prettiest girl at school. When a chance encounter on a rainy day draws them together, Mahiru finds herself spending more and more time helping Amane get his life in order. And though they both insist they have no intention of dating the other, slowly but surely, something more than friendship begins to blossom.
 
(Source: Square Enix)

Manga adaptation of the short stories from Volume 5.5 of the original light novel.