Chitose Is in the Ramune Bottle, Vol. 2 (manga)

Get ready for a crash course on the Saku Chitose style! When Kenta Yamazaki, former shut-in and all-around loser, asks Saku Chitose to teach him how to become popular at school…Saku can’t quite refuse. After all, he’s the man who works magic and takes care of things—everybody’s hero. Under his instruction, Kenta faces a head-to-toe transformation from the way he talks to his fashion choices. Will he finally start living the dream? Or is the life of a popular kid harder than he thought?