Chitose-kun Is in the Ramune Bottle, Vol. 1

As far as normies go, it's hard to beat Saku Chitose. The most popular kid in his highschool? Check. An ironclad reputation that can weather even vicious online attacks?Check. A friend group that's as attractive on the outside as they are on the inside?Check. But when a teacher asks Saku to help reacclimate a student who been shutaway in his room for months to school life, his perfect world will never be the same. What is this, some kinda normie harem story?