As the Pastime Club was making their way home from school, they ran into Hanako Honda's younger sibling, Kentarou. Even though he was shy and hardworking, he mustered up the courage to introduce himself to the gang until he grew uneasy and wanted to leave. However, the trio of girls insisted that he partake in having fun with them at the park. Amusutorongu: Chisato Higuchi posed an unexpected question to The Pastime Club, inquiring who among them was the most powerful. This instigated an intense arm-wrestling competition, further escalated by some underhanded tactics.