Detective Conan: Shinichi, Take the Advice, You Can't Stop the Medicine

Synopsis:

Chen Ri, a drunkard, drank himself into a stupor and died on the street. When he opened his eyes again, he found himself in the world of the little Grim Reaper.

That's right, Chen Ri triggered his own golden finger System. When he came into contact with this world's main cast or people connected to them, there was a chance he'd trigger a System mission. Completing one earned generous rewards, with the rewards depending on how the Host performed during the mission. Chen Ri's butterfly effect could also cause unknown changes to much of the original main cast's story. He could return to his original world by completing this world's ultimate story mission. Otherwise, the wheels of the story would never stop turning.

[Black Organization] "Chen Ri, do you know how much this damn hole hurts a mature member of the Organization?"

[Detective Conan] "We both take drugs, but Chen Ri's side effects just keep getting worse."

[Akemi] "Mr. Chen Ri looks like a cold man, but deep down, he's kinder than most people."

[Shiho] "Chen Ri, cancel your phone number. Or you could just die."

[Curacao] "Sometimes I think that meeting Mr. Chen Ri is both an honor and a sorrow. Truly."