Tsukasa's obsession with Gigant Shooter is pure, dumb joy, a kid convinced that mastering a kids' game matters because to him it actually does. His friends exist only to either help or get in his way, and the show treats both possibilities as equally funny. King Menger is not a card that talks or gives advice; it is a dead man's last gift that Tsukasa carries into battle, and that weight sits underneath every match like a heartbeat.

Tsukasa has one dream: to become the world's best at Gigant Shooter, a battle game along the lines of pog. His partner in these battles is King Menger, a menko card his father left to him. He plays alongside a group of fellow gamers: Miruko, cute but tsundere, Numata, a bully who wears glasses, and Ataru, a sharp-tongued realist. The result is a short-format comedy built around menko card battles and the players who take part in them.