Satou Nishiki-sensei wa Neko wo Kaenai

Sakura Sato, a light novel author, failed his screening to adopt a rescued cat. While he was hospitalized, he met a struggling student named Sato, who he ends up letting live in his house as a part-timer! Does he feel like Daddy Long Legs?! It's not love, but it's a bromance-like story of two close friends living together!

(Source: Akita Shoten, translated)