Kiyotaka Ayanokouji is highly intelligent but intentionally downplays his abilities, preferring to stay out of the spotlight. Ayanokouji comes from the White Room, a secretive facility where children are rigorously trained to be perfect and ruthless. His father is a key figure in this institution, and Ayanokouji has a strained relationship with him, as he was treated harshly and trained to be emotionless.

He's placed in Class 1-D, the lowest-ranked class at the prestigious Tokyo Metropolitan Advanced Nurturing School. His classmates are mostly unremarkable, but he gets involved in their struggles due to his manipulative and strategic nature. He forms close relationships with Suzune Horikita and Kikyō Kushida, though he keeps his true motives hidden.