Mayoi Neko to Koi no Ashiato

Summary

Miyane Kokoro comes back to the city he'd moved away from 7 years prior, due to his parents' transfer. Now attending the same school he'd visited so many times as a kid, Kokoro can't wait to see Chanko the stray cat that lives there again, even if it's past curfew. However, his attempt to find Chanko fails when he ends up getting caught by the school nurse, Hiragi.