Tashiro-kun, Why're You Like This? manga volume 1 features art and story by Yamada.

Meet Tashiro, an awkward college student who only loves one thing - his adorable senpai, Ebihara. He'll stop at nothing to get senpai to date him! Problem is, Ebihara doesn't want anything to do with him… or does he? If he doesn't, why does he keep kissing Tashiro? Don't miss this hilarious comedy of errors that is sure to have you asking why Tashiro-kun is like this!