Tensai Joyuu no Osananajimi to, Kiss Scene wo Enjiru Koto ni Natta

Kaito is a high school boy trying to become an actor, no matter how small the role, in order to live up to a promise to his childhood friend Reina. A new student transfers to his class. It is Rena, who has grown up to become a beautiful girl and a popular actress of the highest caliber! When they are chosen to star together in a new drama, their feelings for each other, which had been a bit awkward, grows even stronger than before! They read the script during their breaks, and go on dates (as rehearsal), in order to prepare for their roles as best they can. But the climax of the show, the kiss scene, is anything but simple...

(Source: Hobby Japan, translated)