During summer vacation, you, Senku and your friends are at the beach by the ocean, running around, playing with the watergun and overall having fun.

You were about to shoot Gen with your watergun when suddenly, someone shoots water at you, prompting you to turn around with your aim at the attacker who turns out to be Senku. That sneaky leek.

"Heh, I got you." Senku sends you a sly smirk with his watergun still pointing at you as if he is preparing to take another shot.