My First Boy Friend.

Yukino is kind to everyone and popular with both boys and girls.
The problem is that he doesn't really understand what it means to like someone. Even when he dates girls, the relationships never last, and he always ends up being the one who gets dumped.
One day, he unexpectedly runs into Tamao, a younger student from his middle school days, who immediately confesses his feelings to him.
At first, Yukino assumes it's just a joke. However, little by little, he gets swept up in Tamao's pace, and before he knows it, the two of them are pretending to be boyfriends...
A sweet, innocent, and frustratingly slow first-love story between a straightforward, cheeky underclassman and a senior who has never truly experienced love.

Original Japanese