ジェラルド＝エリク・アヴァロン

Margot's half-brother. He is a quiet, intelligent boy who cares about his sister. Since he did not inherit the blood of the former emperor Ursula, he has no right to succeed to the throne.

In order to protect Margot, who is always in danger of assassination, the "Kage no Ken" follows her without leaving her side for even a moment. Although he possesses unimaginable combat skills considering his age, he is still too inexperienced to handle the task alone. For now, he is fulfilling his mission as a "Ken" together with his teacher Erin.

He has no doubts about his fate of protecting his sister for the rest of his life.