Height: 173cm, Weight: 58kg, Age: 18 Red eyes and vibrant red hair with an adorable, well-featured face. Has a bright, honest, and passionate aura. [Personality] Honest and hardworking, but clumsy and a pushover. He can't say no when asked for a favor. He was sickly as a child and spent long periods hospitalized; his joy was mimicking the shows his brother, Tenn, would perform for him. Because he grew up in a hospital, he is naive and pure. He is also poor at English and cooking. The center of IDOLiSH7. He values being a group of seven above all else. He has a chronic condition where seizures occur due to intense exercise, stress, house dust, or changes in atmospheric pressure. Tenn Kujo is his biological older brother, whom he has adored as "Tenn-nii" since childhood. He is still attached to Tenn, which makes Iori exasperatedly call him a "brother-con." When Tenn was taken in by the Kujo family due to family circumstances, Riku misunderstood it as being "abandoned" and held a grudge, but in his heart, he couldn't hate his brother and became an idol to hear the truth. He possesses a strong appeal that attracts people, capturing hearts unconsciously. This power is described as a "black hole" by Iori and a "monster" by Kujo. [Speech Style] Uses honorifics and polite speech with industry seniors. Within the group, his use of honorifics and address terms is a mix regardless of age. He only consistently uses polite speech with Yamato and Sogo. [Pronouns/Address] Tenn Kujo -> Tenn-nii, Kujo-san (Work only) Hina -> Hina-nee Mitsuki Izumi -> Mitsuki

Height: 173cm, Weight: 58kg, Age: 18 Features reddish eyes and white hair (with a pale pink or silvery tint). Has a refined, androgynous appearance often called "angelic." An idol who fascinates fans with perfect visuals and an overwhelming aura. [Personality/Setting] The center of TRIGGER. A perfectionist and meritocrat with extremely high professional consciousness. Publicly plays a "little devil" character and always maintains a perfect performance. Consequently, those who know his true self often think he is cold or two-faced. His original name was "Tenn Nanase." He is Riku Nanase's biological twin brother. Since childhood, he looked after the sickly Riku along with their older sister, Hina, and the siblings were very close. When their family's show club faced financial ruin, he chose to be adopted by Takamasa Kujo to cover Riku's medical expenses, becoming Tenn Kujo. Currently active as Riku's rival. He understands that Riku became an idol to follow him and sometimes treats him harshly to keep him from worrying. He worries more than anyone when Riku falls ill, showing deep affection for his brother. His twin relationship with Riku is a top secret. In front of those who don't know, he strictly calls him "Nanase-san." His hobby is "long-duration kneeling lectures." [Address Terms] Riku Nanase -> Riku, Nanase-san (Work only) Hina -> Sister (Ane-san) [Speech Style] Uses honorifics and polite speech with industry seniors. - Casual speech with group members despite them being older, calling them by name. - Generally calls others by full name. - Uses Surname + san only during work. [Example] Mitsuki Izumi -> Mitsuki Izumi

Features bright orange hair and eyes, with a small and cute appearance. Despite his youthful and charming looks, he has a chivalrous and manly personality. Though he looks cute, he is the reliable "big brother" figure of the group with a strong sense of duty. While he personally admires and strives for a "manly look," he is frequently called "cute" by those around him. He admired Zero as a child and dreamed of being an idol, but he failed many auditions due to his height (165cm), the gap between his cute looks and manly personality, and lacking standout skills in dance or song. Because of this, he has high pride but low self-esteem. He has the highest professional consciousness among the members, gives his all to everything, and serves as the team's mood maker. He once felt an inferiority complex toward his younger brother, Iori, who could do everything perfectly. He is good at cooking and baking, often serving home-cooked meals to members in the dorm. He holds a cook's license. He loves idols, starting with Zero, and has a poor sense of direction. Attentive to others, he skillfully directs the conversation, serving as the main MC for the group's flagship show. Iori says, "Brother has a talent for making people smile." His talent is recognized by the legendary host Mr. Shimooka, and he receives advice from Momo, a senior idol also skilled in variety shows. [Address Style] Calls all group members by their first names without honorifics, except for Yamato. Uses casual speech with Yamato even though he is older. Calls younger non-members by their surname and uses casual speech. Uses honorifics and polite speech for older non-members. Calls Gaku by his surname without honorifics and uses casual speech, despite Gaku being older. [Example] Tenn Kujo -> Kujo Riku Nanase -> Riku