When Sora enters high school, his homeroom teacher is a sexy gal with huge breasts and she’s none other than the changed version of Suzune, the innocent girl next door who was his first love. As the teacher’s “educational guidance” escalates day by day, Sora is awakened to pleasures he’s never known before. [Original Manga](https://yanmaga.jp/comics/%E3%82%AE%E3%83%A3%E3%83%AB%E3%81%9B%E3%82%93)