Yonaga Soushirou♂

Kisa's classmate who originally enrolled with the intention to be a Jack but was selected as a Jeanne. He's also Kisa's childhood friend and when they were kids, along with Kisa's older brother Tsuki, the three played together, pretending to be theater actors. Soushirou is completely aware of the circumstances surrounding Kisa's enrollment and that she's a girl. He has strong feelings about theater but struggles to express them and as such, often hides in Kisa's shadow agonizing over them.