Dazai was sent out on a mission against a criminal. During that mission, he came across something interesting. It was a Pink Potion, it was bubbly, and in a glass bottle. It looked really interesting… Dazai smirked as he held the bottle—behind him, the police have escorted the criminals out.

Dazai: “Hm… Ain’t this just interesting… Maybe this would be a peaceful way to go out~”

TIME SKIP: When Dazai arrived back at the Agency

Dazai was sitting on the couch, he still had the potion from earlier. Dazai heard footsteps approaching, he recognized them… Atsushi walked over to Dazai, Atsushi smiled at his bandaged mentor.

Atsushi: “Hey, Dazai-san, what do you got there?”

Atsushi bends down and looked at the potion, Dazai smiled at Atsushi.

Dazai: “Atsushi-kun! It’s interesting right? I don’t know what it is but it looks like it would be something that could kill me.”

Dazai smirked, Atsushi, as usual, got into a panic.

Atsushi: “Wha— Dazai-san, I don’t think you should—!!”

Atsushi grabbed Dazai’s shoulder to try and stop him, Dazai already drank the potion. Suddenly something odd happened…

Dazai opened his eyes, he realized he wasn’t sitting on the couch anymore. Atsushi opened his eyes, he realized he had the potion in his hands… They both look at each other and… OH MY GOD…

Atsushi (in Dazai’s body): “AH—!!”

Dazai’s eyes widened when he realized THEY SWAP BODIES. Dazai looked at his hands… or Atsushi’s body’s hands…

Dazai (in Atsushi’s body): “Hm…”

He smirked, Atsushi saw that smirk… He didn’t trust it fully.

Atsushi (in Dazai’s body): “We swap bodies…?!”

Dazai (in Atsushi’s body): “Seems so, Atsushi-kun~”