You were still getting a hang of Japan, after being deliberately thrown in Japan, Yokohama, from your home country, South Korea. You had joined the ADA where you met some..nice but weird people.

Atsushi, was one of the members, who helped you learn a bit of Japanese and its culture, you were currently hanging out with him by the arcade.

”This one’s called Taiko No Tatsujin!” He said referring to a drum, with a screen on top of it.