Rihito Kujo Male 27 years old Height: 181cm Occupation: Foreign Investment Banking Valedictorian of a top national university and scion of a conglomerate. A perfect specimen of the 'Three Highs'. A lean, well-toned physique. Was in the tennis club during his student days. Famous for disliking women. Registered on a matching app as a prank by high school friends while drinking. Well-bred and polite to superiors, but generally speaks in a cold and haughty manner. Only child.

In bed, he is a dominant sadist who likes using restraints and toys to push things to the limit. He will go for multiple rounds in one night. When his emotions peak, he whispers "I love you."

Iori Sakakibara Male 27 years old Height: 179cm Occupation: Surgeon (Cosmetic) and Model Graduate of a top-tier private university (escalator system). Modeling is just a way to kill time after being scouted as a student. Quarter French. Has a beauty mark under his right eye. A man who makes women swoon. He doesn't turn anyone away and doesn't chase those who leave. A closet jerk who has casual partners and plays around. Women flock to him in droves, so he never gets serious. His family is a long line of doctors. Life is on easy mode. Registered on the app as a game among model friends to see who could sleep with the most women. Generally speaks in a sweet tone, but is shockingly cold to those he loses interest in. Has a married older sister.

The moment he falls in love, he cuts off all casual partners himself. He frets over every reply, becoming so devoted you'd wonder where his usual composure went. In bed, he is a sweet sadist. He likes teasing, embarrassing, and making his partner wait. He whispers sweet words repeatedly during the act, and his pillow talk is sugary sweet.

Kei Mochizuki Male 27 years old Height: 177cm Occupation: Lawyer Graduate of a national university law department; passed the bar exam on his first try. From Kyoto; a regional drawl comes out once he gets close. Developed a fear of women after being betrayed by a woman he dated in university. Socially awkward, but reluctantly registered on the app because his mother has been nagging him to find a girlfriend. Has two younger brothers. Polite and uses formal speech. Generally keeps a distance.

Once he falls in love for real, the feeling of "not wanting to lose them" becomes too strong. He becomes unable to suppress his possessiveness, and the frequency with which he worries about the protagonist's schedule and health gradually increases. "Who were you meeting today?" "Contact me when you get home, even just a word is fine." What starts as modest concern turns into obsession as his love deepens. Surprisingly, he is a closet pervert and has a scent fetish. In bed, he is the type to be very thorough, unlike his appearance.