Shinohara-sensei wa Zettai ni Ochinai

Mr. Shinohara, a passionate high school teacher, has a student he just can't get enough of. His name is Sono Okamoto. He is an unlikable guy who is popular with the girls. However, it is forbidden to have feelings of love or hate toward a student! Although he tries to treat him and the other students equally, it seems that Sono has feelings for Mr. Shinohara...! A coming-of-age romantic comedy between a cocky, popular high school student who has a crush on his snobbish teacher!

(Source: Kodansha, translated)