My Superpower Is Feeding People Poisonous Mushrooms

A silly story. Apologies for any out-of-character moments. The former Gotham superhero Frost Hawk, Beins Lanmeier, was forced to travel between worlds day after day. After returning from the quaint city of Mihua to the even more quaint Gotham, he resumed his nightly patrols. Then he opened a door, and was met by howling winds and a long fall from a great height. A prompt box that had been silent for ages suddenly appeared before his eyes again "You have obtained supreme power." "Colorful Poisonous Mushrooms: You can feed other people poisonous mushrooms with random effects. (Special note: These random effects cannot be predicted in advance or resisted by any ability.)" As Beins plummeted through the air, he instinctively tried to use his power to make himself fly. Instead, he fed poisonous mushrooms to everyone below. "You fed the road a “Slippery Poison Mushroom”: Anyone who steps on it is guaranteed to slip and fall." What kind of proper wizard feeds poisonous mushrooms to a road?! Oda Sakunosuke reacted in the nick of time and leaped onto a car. Everyone else sprawled across the ground where they stood. Held by Oda, Beins looked down at his body, which had been shrunk by that wizard’s spell, and hesitated. “Uh, my body may be small, but my mind is as sharp as ever. I’m the all-knowing great detective?” Beins used his poisonous mushrooms to run roughshod over Yokohama and take over a lot of territory. But for some reason, he ended up turning the place into a kindergarten and a zoo. Dazai: ...Didn't you only take in Gin and Akutagawa? Beins: Would you believe me if I said Atsushi was summoned from Rashomon? Beins went abroad to deal with his former subordinate running off with the money. When he returned, he had two extra creatures with him. Dazai: ...What's with that golden dragon and the cat? Beins: Well, the cat is Verlaine, and the dragon is Shibusawa Tatsuhiko. They attacked me, then the poisonous mushrooms I fed them turned them into this. Beins: I only wanted the dragon to be my chief fashion designer. Dazai stared in silence at the European King of Assassins and the “White Kirin” in Beins’s arms, who now had a combat strength of, at best, minus five. Beins returned, looking exhausted, carrying three babies. Dazai: Just tell me. What is it this time? Beins: They said they were from the military police, and called themselves something like the Hunting Dogs. That girl charged at me to use her ability, then turned herself and her teammates into this. Beins: I warned them. Dazai: ... Dazai finally snapped. Pointing at Beins, who was holding an extremely familiar Siberian hamster in both hands, a white hat perched on its head, he shouted, “Throw it out!!” “Stop bringing things home!!” (This was originally meant to be the second part of a Detective Conan-inspired story that had passed review. But the first part ended up with too many plot twists for me to keep writing, so I abandoned it. I revised the story a few times, adjusted some of the settings, and removed the Gotham section. The Bungou Stray Dogs plotline has not been changed at all. It should still make sense even if you haven't read the first part.) Theme: Peace