24th Period 'Victory or Defeat' / 25th Period 'Cross-Fire' / 26th Period 'Bookstore' / 27th Period 'Three-legged'.After Natsumi successfully blocks his football goal, Ryöta begins to frantically challenge her to various athletic activities, betting all the boys' lunch desserts. After facing defeat at every turn, Ryöta finally finds something he is better at -- embroidery. On the way back from school, Ryöta and Köji decide to have a water gun fight, battling each other as leaders of their own individual teams. All proceeds smoothly until they soak the passing group of girls from their class with an errant blast of water. Out for revenge, the incensed girls march to the store to buy their own water guns and utterly defeat both teams of boys. While in front of a bookstore, Megumi debates over buying one of two volumes of manga she wants but solves her dilemma when she decides to share the cost of the two volumes with Kazumi. In the same store, Ryöta's debate on whether or not he will buy magazine meant for young kids containing an action series he wants is resolved toward buying it after seeing Tsukasa do the same. Challenged by Köji who is partnered with Chika to who would win the school's sports festival event, the three-legged race, Ryöta practices obsessively with his partner Yüki only to end up in last place.