Kaito Matsushima

The story takes place in Japan in both 1986 and 2006. The 1986 storyline follows a gamer named Daisuke who wants to confess his feelings for Kumiko, a girl he likes — all while trying to reclaim his copy of the Famicom (NES) game Mighty Bomb Jack that he lent out. In 2006, the hapless game company manager Arino-kacho struggles to complete Mighty Bomb Jack in front of fans. The storylines of the boy who loves Famicom and the middle-aged man who loves Famicom eventually merge into one.

July 1590, Odawara. Toyotomi Hideyoshi's army had surrounded the Odawara Castle for over 3 months, hoping to conquer this last obstacle to his dream of the country's unification. Standing at the gate of the castle, a lone man facing the menacing guards shouted out: "Do not throw your lives away. Treasure living!". Not long after, the castle gates opened and the reigning lord surrendered. The name of that man is Kuroda Kanbee. An excellent military strategist, he worked hand-in-hand with Hideyoshi to unify the country.