Ikushima Isao

Isao Ikushima is Hayato's father.
He is an unemployed self-proclaimed professional pachinko player and his wife's pimp.
The more Yuto learns from him and takes him seriously, the more he annoys those around him with his corrupt lifestyle and human skills.
He embodies the life of a pimp, making his wife dependent on him with techniques that are unimaginable from the outside.