The Anime Lad
Amane lives alone in an apartment maintained to standards best described as survivable. His classmate Mahiru lives next door, though the two barely interact until he lends her an umbrella in the rain. She later repays the favor and sees how he lives. A practical exchange begins involving food and household help. Their school reputations remain outside the door, where they are less useful.
Super Eyepatch Fox
Two classmates happen to live in neighboring apartments. After Amane lends Mahiru an umbrella, gratitude becomes a series of meals and practical favors. At school she seems unreachable. At home they negotiate distance in quieter terms, learning each other's habits through ordinary evenings rather than grand declarations.
Gigguku
This romance understands the unbearable power of someone quietly leaving food for you! Amane and Mahiru barely acknowledge each other at school, then discover that their front doors are basically adjacent. The show lives in that private contrast. Shared meals become events and a cleaned room becomes intimacy. Every tiny favor carries far too much emotional voltage for two people insisting this arrangement is merely practical.
Father's Basement
Mahiru is introduced with enough domestic competence to trigger every perfect-girlfriend alarm. The saving grace is that she has boundaries and reasons to keep the arrangement conditional. Amane is not rewarded merely for existing. Their closeness develops through repeated care and awkward gratitude, plus the peculiar honesty available when school personas stay outside. It is low-conflict comfort viewing with a very polished fantasy at its center.