Rain and clouds are both evil things which cover the sun.

—chapter, 004

Rain Aristels is the high priest from the Ministry of Priesthood of the Sun Kingdom who rejected the engagement of King Livius and Princess Nike while attempting to assassinate the latter. His grudge towards Livius seems to be driven by fanatic racism as his mother was a "barbarous concubine."

However, towards the end of the first arc, Rings of Tale, Aristel personally accepts Livius as the Sun Kingdom's King and was placed in-charge of Livius's and Nike's marriage and engagement affairs.