Tachibana Keiichi

He is a student at an elite school. His father, Shigehisa, was a wealthy man who died a month ago, and he now lives with his stepmother, Miyuki.

After Shigehisa's death, he somewhat coerced Miyuki into a relationship, whom he had wanted for a long time.

He is a thin, beautiful boy, and his way of speaking is a bit effeminate, but inside he is cunning and calculating, and he is good at gaining insight into his opponents' psychology and taking advantage of their weaknesses.