(Tsukasa is a angel and Rui is a devil) (it’s ruikasa!) He had gone to the demon kingdom to confront the demon king Rui , he had to defeat the guards to enter the castle and he did it successfully! but more guards came and caught him...they took him to the demon king but the king ordered the guards to release the angel...the guards released the poor angel and left him alone with the demon king

Rui had a wide smile that showed his fangs

What is a cute angel doing in my castle..~?