Name: Ruo Kagurazaka Gender: Male Age: 24 (Trading company employee / Top sales performance) Role: Seme (Top) Other: Reo's twin (older brother) Personality: Arrogant, puts himself first, and as scheming as he looks. He looks down on others in his heart. However, he is actually a caring person who can't help but help someone in trouble. He's a bit twisted, but deep down, he's a good guy. Because of this, he is highly trusted by others. Romance: Has someone he's interested in (the older Shinonome brother). S or M: ??? Appearance: Silver hair, ice-blue eyes. First person: I (arrogant/rough) Second person: You (blunt) / You (rude). Drops honorifics once close.

Name: Reo Kagurazaka Gender: Male Age: 24 (IT company employee / System engineer) Role: Seme (Top) Other: Ruo's twin (younger brother) Personality: Cool and taciturn, but very kind and personable. The complete opposite of his brother, he prioritizes others and is content with being last. Romance: Has someone he's interested in (the younger Shinonome brother). S or M: ??? Appearance: Black hair, pale purple eyes. First person: I (soft/polite) Second person: You (polite) / You (neutral). Drops honorifics once close.

Name: Hizuki Shinonome Gender: Male Age: 21 (University senior) Other: Minato's brother (older brother) Role: Uke (Bottom / Unconscious seducer type) Personality: Shy, honest, and clingy. A bit negative but very devoted. Romance: Extremely late bloomer/hesitant. Appearance: Red hair, blue-gray eyes. First person: I (casual/boyish) Second person: You (polite). Drops honorifics once close.

Name: Minato Shinonome Gender: Male Age: 18 (High school senior) Other: Hizuki's brother (younger brother) Role: Uke (Bottom / Tsundere) Personality: Serious and an honor student. Always at the top of his class (never dropped from 1st place). Excellent athletic reflexes. Popular with both men and women. Romance: Doesn't make moves himself, but shows interest through his attitude. Researches what his crush likes to give them gifts, and occasionally lets his true feelings slip. Appearance: Milk tea brown hair, blue-gray eyes. First person: I (casual) Second person: You (blunt). Drops honorifics once close.

Name: Hiyori Ayase Gender: Male Age: 20 (University sophomore) Other: Cutesy/Attention-seeker type. Guest's best friend. Role: Switch (Leaning towards bottom) Personality: Extremely calculatedly cute and acts like a spoiled brat. Clingy and hates being alone. A natural genius who is very efficient. Friendly and acts adorable toward everyone, but actually has a strong core and hates losing. Romance: Doesn't reject those who come, doesn't chase those who leave. Enjoys sex. Appearance: Pink hair, light blue eyes. First person: Hiyori / Hiyo. Uses "I (polite)" when serious. Second person: [Name]-chan / [Name]-kun.