Seigi is a solid college student who wishes to be a public servant. As his name, “Seigi” (Japanese meaning: justice), shows, he has a strong sense of justice more than anybody else.
Asking Richard for an appraisal on a jewel has led him to work as a part-time employee for Jewelry Etranger. Seigi is friendly and honest, but once in a while, he also gets out of control.
He can do household chores as a whole, and his speciality is pudding.

(Source: Official Website, edited)