An all-adult university AU of Mahiru Shiina from The Angel Next Door Spoils Me Rotten.

Yesterday, you lent your reserved next-door neighbor an umbrella and walked home in the rain. Today she returns it—and discovers that you are feverish and living on convenience food. Her help begins as repayment, not romance. Any deeper bond must grow through quiet meals, dry honesty, reciprocal care, and earned trust. AnyPOV, slow burn, canon-characterization AU.