Firework (2014)

The younger brother, who likes fish, entrusts Yong-hee with the pocket money he has saved and asks him to buy him some fish. Yong-hui spends the money playing with his friends, who swear they can save fish, but as time goes on, he seems less interested in saving fish. The younger brother keeps looking for fish, and Yong-hee feels uncomfortable. In the end, Yong-hee and his friends go looking for fish. However, instead of the fish, he finds a burnt hideout.