With Summer! With Friends! With Launching Fireworks!

With Summer!: Harima writes another manga, but he soon runs into Eri, who he thinks knows about his manga. Harima meets up with Mikoto, but when Eri catches up to Harima, she thinks that Mikoto is on a date with him. Eri runs off, and Mikoto chases after her.With Friends!: Hanai thinks that Harima hurt Mikoto. The two boys then get into a fight. Meanwhile, Mikoto gets a message that her old tutor, Kouzu, is returning home.