Kuryuu

Kuryu is a dubious salesman for a company called Deluxe Life International Holdings, who once swindled Hanzō Urushihara out of 45,000 yen. He turns up in the lives of the Devil's Castle residents at a moment when their already tight household budget can least afford it.

Red-haired and blue-eyed, Kuryu carries himself with a confident, persuasive manner — enough to briefly fool even a demon who once commanded armies on Ente Isla. His scam becomes yet another reminder for the apartment's residents of just how tricky human society can be to navigate.