Definitions by I love Diavolo Obey Me
callisto regulus
Callisto Regulus is a character name from manhwa called "Death Is The Only Ending For The Villainess" or "Villainess Are Destined To Die". He is the male lead of the novel (also the manhwa maybe). He is the crown prince of Ioka empire.
callisto regulus by I love Diavolo Obey Me November 17, 2021