Kokuhaku Cupid

A gamer boy takes on a beautiful girl as an apprentice! Kato, a junior high school student who is devoted to video games, is asked to teach a new game called “Nanashiki Cupid” to Suzuki Meiji, a beautiful girl who is popular in his class. What is the fate of the duo of the beautiful girl, Mage, who is in love with him, and the apathetic boy, Kato?

(Source: Shueisha, translated)