Sadao is the Demon King from Ente Isla. Due to being confronted by the Hero Emilia and the humans, he was forced to retreat and ended up in the human world in present day Japan with one of his generals, Ashiya, and changed into a human form. To survive, he works as part-timer at MgRonalds and is eventually promoted from part-time to a full-time worker.
Solovan wished Kohran Li a Happy Birthday
Clener74 wished Mutsumi Otohime a Happy Birthday
Clener74 loved Mimimi Utsukushisugi
NaluniToons wished Ryunosuke Tanaka a Happy Birthday
Jupiter07 faved Kouko Kaga
Airport found a Dragon Slayer Candidate Misuzu Kamio
Natsumimi wished Yoshitake Shiraishi a Happy Birthday
Rarko wished Qing Luan a Happy Birthday