Uchiage Hanabi, Shita kara Miru ka? Yoko kara Miru ka?

Schoolchildren Norimichi, Yuusuke, and Junichi want to know if fireworks look round or flat from the side. They make a plan to find the answer at a fireworks display, while Nazuna schemes to run away with Norimichi or Yuusuke, whoever wins at the pool.