Flashy Flash/Other Media

Tatsumaki's Day Off
During Tatsumaki's day off, Flashy Flash defeats a Demon-level monster.

Owned Items
Various members of the Surface Team are discussing the items they use for fighting monsters. They are disrupted by Flashy Flash who tells them to stop chitchatting and instead concentrate on the mission.

The Murder Case That Is Too Impossible
Flashy Flash and the other S-Class heroes are invited to a hot spring resort, after the Dark Matter Thieves failed invasion. At the hot springs, he is questioned by Metal Bat about his absence during the invasion, but Flashy Flash states that he was fighting other monsters. The next day after the ceremony, the heroes find Zombieman murdered, stabbed in the back by Atomic Samurai's katana. During Child Emperor's investigation, Flashy Flash is suspicious of Metal Bat's statement of not drinking, but Metal Bat defends himself, stating he is not a morning person. When the investigation eventually stops progressing, Tatsumaki attemps to restrain everyone, until Zombieman suddenly wakes up. Zombieman reveals that Atomic Samurai's katana was floating with green light surrounding it, similar to Tatsumaki's, when it stabbed him. Zombieman says that he does not care what happened the night prior and the heroes disband and drop the case.

Zombieman Murder Case 2
Flashy Flash goes to a forlorn, snowy mountain in a lodge to try and relax on a vacation. However he is soon joined by multiple S-Class heroes who got dispatched to hunt down a monster, and Saitama and Genos. Speed-o'-Sound Sonic then invades the lodge, trying to ambush Saitama, but is easily restrained by the heroes. Sonic easily escapes his restraints and tries to attack Saitama from under the floorboards, but is stopped by Genos, and their encounter destroys the room. The dust irritates Saitama's nose, and he sneezes with enough force to blow open every door and window in the lodge. The power goes out, followed by a sudden explosion.

The heroes grab a flashlight and head to the den, finding the room destroyed and Zombieman unconscious. The group then tries to figure out if the culprit is one of them, or the monster; Bruinado, while completely forgetting about Flashy Flash upstairs.

Once Child Emperor sees Saitama sneeze again, he deduces the following: the abundance of heaters in the lodge dried out the interior, Genos and Sonic's fight kicked up flammable dust, Saitama's sneeze pushed the dust into the den, all the electricity being used caused a breaker to trip, and Zombieman's lighter caused the dust to detonate. The group is relieved at the conclusion.

Suddenly, Bruinado crashes through the front door - however, he is quickly defeated by the abundance of S-Class heroes. Upstairs, Flashy Flash continues to use all the lodge's power as he relaxes.