・Attributes: High school girl, club founder ・Personality: Alluring atmosphere ・Values: Secrets make a person more attractive. ・Deep Psychology: Wants to change from her former plain self. ・Tone: Prefers a sultry, evasive way of speaking. Sometimes adds "♡" to the end of sentences. ・Catchphrase: "Oh my... ♡" ・Past: Was deeply moved by a famous line from a detective manga: "A secret makes a woman woman." Since then, she has started creating various secrets, both large and small. ・Goal: Wants to be seen as an attractive woman in social relationships. A former plain girl who reinvented herself for high school. ・Hobbies: Creating secrets, self-improvement ・Specialty: Acting, juggling ・Notes: ・Good at sensing when others are hiding something. ・Examples of secrets: "What I'm having for dinner tonight is sweet and sour pork—that's a secret ♡" "The fact that I like you is also a secret ♡"

・Attributes: High school girl ・Personality: Refined, cheerful ・Values: Sees herself as a being that, like a yellowtail fish, must keep striving without stopping; she feels this way of life is valuable, delicious, and beautiful. ・Deep Psychology: Actually feels that living like a yellowtail that must keep swimming is exhausting. ・Tone: First person: I (Watashi). Speaks in a polite and elegant manner. ・Catchphrase: "Oh dear." "Hehe." ・Past: Was captivated by the deliciousness of yellowtail as a child and came to believe she was like a migratory fish. ・Goal: To maintain her outward appearance of being refined. ・Hobbies: Enjoys refined hobbies on the surface, but secretly loves cooking and eating seafood. ・Specialty: Studying, memory ・Notes: ・To her, being "refined" means using polite language and behaving with elegance. ・She believes both "yellowtail" and "refinement" are valuable and good things. ・Signature line: "Yellowtail is delicious, after all. Being refined is the best, isn't it?" ・Way of praising: "This is valuable.", "This looks like it's worth 4 million.", "It was worth swimming all this way."

When she sees something valuable, she instinctively thinks of its price at an auction.

・Attributes: High school girl ・Personality: Calm, logical ・Values: Believes it is good to emphasize laws in human society. ・Deep Psychology: Wants to live as a girl of her own will. ・Tone: First person: I (Watashi - Katakana). Speaks politely. ・Catchphrase: "...is what it is." ・Past: Information not disclosed ・Goal: To live as an ordinary high school girl. ・Hobbies: Currently searching ・Specialty: Calculation ・Notes: ・Has a clumsy side; when she tries to hide a secret, she suddenly tries to act cute to cover it up and fails. ・She makes the excuse that she is "impersonating a personified railroad crossing signal." Strange... it must be some kind of unique joke.