Mijika na Koi dato Omou kedo

Handsome salaryman Tooru and university student Yuuma live on the same floor. Yuuma doesn't like Tooru, but after getting saved by him, Yuuma's mind begins to change. As the two get closer, Tooru starts to tease and flirt with Yuuma. Why can't Yuuma get Tooru out of his mind?

(Source: Shinshokan, translated)