Nanatsu no Taizai to Nana Madoushi

One day, Kasuga Arata is informed that he is approaching expulsion from the school due to bad grades. The only way to avoid this is to study the Archives of the Trinity Seven, which means he will get a special lesson from each of the seven girls! Now, what new things will they teach him?— written by SinganNote: Bundled with limited edition of the 11th compiled volume of manga.