＜ Ai Komori sudden transfer!!＞ Keisuke's new mother Ai has remarried and arrived. Keisuke is irritated by Ai's familiarity with him, but Ai, who was abandoned at a young age and has lived alone ever since, is also anxious about her first family. The stepmother and daughter are unable to close the gap... However, Ai's adult charm gradually draws Keisuke in... Keisuke takes advantage of Ai's opportunity to take a shower and steals her underwear. Ai immediately notices and heads to Keisuke wearing only a bath towel...