Kimi to ja Nakya Koi mo Dekinai

A spoiled obsession dog student x clumsy and unrelenting teacher. Pure love is not enough...! Misaki has always been in love with his childhood friend, Nachi. However, it's been four years since Nachi left for university. Although Misaki grew up to be a popular handsome high school student, he still only loves Nachi...but now Nachi is a teacher at Misaki's school?! (Source: Takeshobo, translated)