Heisuke Mashimo Amateur freelance hitman Heisuke Mashimo decides to take on Sakamoto's bounty, hoping that the one billion yen will bring him out of poverty and help take care of his pet bird Piisuke. However, when he enters Sakamoto's store, he does not recognize Sakamoto, who successfully bluffs him into thinking he entered the wrong store. With few other options for income, Heisuke decides to enter a paintball competition with a one million yen prize...