[Pixiv](https://comic.pixiv.net/works/6819)
"The person I like is a kung-fu master." 28 year-old Numajiri is a lethargic convenience store staff who had fallen in love at first sight with a lady customer. It turns out that the lady is the daughter of a family that runs a kung-fu dojo. In his effort to get on her good side, he fervently began to take up kung-fu and gradually became absorbed in it... This story shows how Numajiri struggles and doesn't give up on his love for a woman who's out of his league.
https://www.cmoa.jp/title/267055/