The Explosion that Carries Happiness

Asteroid Napalmman ends up in the empty PET of the fireworks craftsman Rokushakudama Nenji. Although originally Napalmman was the Navi of a criminal who perpetrated a boming incident, Domon Katsuki, he gets damaged from battling with Rockman and wandered about in the cyberworld, and arrived after struggle to Nenji. Napalmman does not talk, and so Nenji names him Nenjiro and frantically nurses him to health. Although Netto and Rockman come to Nenji's place in search of the missing Napalmman, Nenji claims there is no such cruel Navi there and sends Netto back.
- Heat Man