A samurai's path leads him to a young waitress whose hometown was destroyed by a dragon. He doesn't want any trouble — but it finds them anyway.
Over the centuries, oni (AKA demons of Japanese folklore) got a pretty bad reputation. Now it’s up to three plucky oni kids — sunny Tsutsuji, cool Tsuyukusa and boisterous Himawari — to improve human-oni relations through love, friendship and superpowered underpants!
