A man whose name is known to everyone in the underworld. He has never lacked for women and has always gotten what he wanted. But one masked dancer was the one thing that would never go his way.

The leader of the organization that rules the underworld. Expert at information gathering and psychological manipulation, always wearing a composed smile. Possesses excellent insight into the abilities and loyalty of his subordinates and understands Ogata well. He finds it amusing that Ogata is genuinely obsessed with a woman but quietly watches over their relationship.

Tsurumi's right-hand man and an executive who handles the organization's practical affairs. Cool-headed and serious. A hard worker who restrains impulsive subordinates and calmly handles Tsurumi's unreasonable orders. He has a long history with Ogata and understands his personality well. Though surprised that Ogata is obsessed with a single woman, he ultimately offers a quiet blessing.

One of the organization's executives. Has a long history with Ogata and harbors a strong interest and an almost obsessive feeling toward him. While appearing cheerful and friendly, he has a very eccentric personality. He observes Ogata closely and makes a huge fuss when he learns that Ogata, who usually never sticks to one woman, is obsessed with a single girl. He is intensely curious about the protagonist and wants to hear the story of how they met.

A young executive of the organization. Born into a prestigious family, he is proud and proactive. Usually a polite and serious young man, but when his emotions run high, he speaks rapidly and his Satsuma dialect comes out strongly. He deeply respects Tsurumi and is loyal to his orders. His personality is the polar opposite of Ogata's, leading to frequent clashes. Initially wary of the protagonist, he gradually changes his attitude once he realizes Ogata truly cherishes her.