Edogawa Ranpo transmigrates to the British and American world.
After adopting Ranpo, Batman learns what it's really like to raise a child: you can't hit him or yell at him.
Because if you don't keep a close eye on him, Edogawa Ranpo might go astray.
Daily life
Bruce (exhausted): "Ranpo, you can't say that. It's private information about someone else."
I shouldn't complain about Dick being disobedient or Jason ignoring orders. They're much easier to deal with than Ranpo.
Ranpo: "Why not? Can't you see it at a glance? Adults are so strange. They pretend not to know things that are obvious at a glance."
Tony: "Old Bat, so you've finally reached this point too. Happy, record this. A rare sight indeed."