Chitose Is in the Ramune Bottle

Being popular isn't easy. It's hard to beat Saku Chitose. The most popular kid in his high school? Check. An ironclad reputation that can weather even vicious online attacks? Check. A group of friends as attractive on the outside as they are inside? Check. But when a teacher asks for his help bringing back a student who has been shut away in his room for months, Saku's perfect world will never be the same. What is this, some kind of normie harem story...?