HAPPY☆LESSON: ADVANCE

The teachers are chosen to model new school uniforms, and Chitose is "randomly" chosen to be escort Mutsuki's escort. The new neighbor is spying, and seems to have it out for Chitose. Well, each sensei-mama throws her own flair into her time on stage. Wait! Who is this guy attacking Chitose? And why does he look so much like the new neighbor? What is their connection? And will Chitose escort Mutsuki? And what does Muuchin mean?

The uniform modeled by Kisaragi won the vote. It seems the neighbor has been peeking at the family's house. But why? Chitose receives a challenge delivered by knife message? And the new guy is attacking him?

Nagatsuki asks Uzuki why she is Chitose's mom. Uzuki decides to take Chitose to an amusement park because of this. Outside the park, they find Fumutsuki and Chitose has to act like he bumped into Uzuki on accident. They get split up... but wait, the girl next door is following them. What is she doing there? Then in a freak accident, a ride breaks down and a fire is started by a couple using a lighter to see the exit. Oh no! A mother and her son are trapped! Can Uzuki, and Chitose save them in time? And what does Uzuki know about this girl?

Well, looks like Yayoi has her hands full. Visitor after visitor, problem after problem. Mutsuki worries about Nagatsuki. Satsuki needs to borrow slippers. Kisaragi comes with a delivery, and stays for tea, then leaves to work on a secret. Nagatsuki visits for her health check, and gets some good advice as well. Then Nagatsuki tells Yayoi a little more than she wanted to know about Fuuchin, or father. Minazuki hurt herself in gym? Well what do you know, Hazuki is home again. Hazuki is the one that told Nagatsuki? Wait, Chitose is skipping classes? Huh? Fumutsuki is having thoughts about someone other than Chitose? Who? Uhoh, Satsuki ruined the slippers Yayoi lent her, and they were Uzuki's slippers for Cos-play. What? Chitsose has been sleeping all day?