Otonari-san wa Kiss yori Amai

Overview

Nao, a high school student, spends her days concealing her true feelings and trying not to stand out in class. Everything changes when a boy from her middle school who once saw her genuine self, moves into the apartment next door. However, he has become a much cooler and more distant person than she remembers. (Source: Nakayoshi, translated)

Source: AniList