I Made a Promise to Make The Class’s Top Student my 'Little Sister.' Apparently, She Really Wants to be Doted on.

Name: I Made a Promise to Make The Class’s Top Student my 'Little Sister.' Apparently, She Really Wants to be Doted on.
Author: Yuu Hidaka

クラスの優等生を『妹』にする約束をした。どうやらいっぱい甘えたいらしい。