Yi SeongJung.

Prince name: Yi BangSul.
Mongolian name: Aychi.
Dynasty: Goryeo.
Birthday: 24th June 1204.
Father: JungYeol of Goryeo.
Mother: Queen Atliugh.
Ethnicity: Korean-Mongolian.

Modern name: SeJun.
Affiliation: Positive Avatars.
* God: Isseiner.
* Leader: MoonBin.
Relatives: Tero - Legacy.
MoonBin - Adoptive father.
Haru - Adoptive mother.
TaMu - Biological brother.