Cameo is one of the characters from Okashina Okashi.

Hakim: Hey! I object!

This doesn’t make any sense! If I died in 1897, how would people in 1997 know to come to 1897 to kill me in the first place? Isn’t that a plot hole?

Death: No…this is a plot hole. (I’m Death, by the way.)

Cameo: This definitely isn’t our Tokyo. Time to try the next one.