Genres:Manga / Josei / Drama / Romance / School life / Slice of life / Smut
Mr. Hiiragi's a popular teacher, favored by students for his enjoyable lessons. Chika, the class representative, looks up to him, and even has a crush on him that was supposed to stay secret... However, one fateful bag inspection day, their relationship takes a sudden turn. It should've ended without incident, but inside Chika's bag is something that wasn't there before! Mr. Hiiragi keeps her after school for a special lesson on how to use it...
chapters 97 to onward Renta Version but with Coolmic numbers just to keeping in order
Just keep in mind that probably Coolmic has several more numbers because is a webtoon format but its the same manga.