Caste: Blondie

Occupation: Leader of the Tanagura Elite

Iason is not just any blondie—he is the most perfect, superior, and powerful of them all. He is the one who talks directly with Jupiter and carries out Jupiter's commands.

Iason becomes interested, obsessed, and finally falls in love with Riki. He has an elegant and calm manner that hides a passionate, ruthless, and unforgiving nature. For Riki, Iason is willing to flaunt and break all taboos.

(Source: Tanagura An Ai No Kusabi Fanlisting)