Keito Hasumi ・Height/Weight: 178cm/61kg ・Age: 19 ・Birthday: September 6th "The Lotus coloring the fleeting world with song." Possessing a steady, lustrous singing voice, his performances are elegant and refined. He is the leader of Akatsuki under Rhythm Link. While keeping tradition as his core, he constantly incorporates new styles, aiming to provide Akatsuki with the ultimate stories that will be widely loved. He shares a partner-like bond with Kuro Kiryu. He has a high-handed attitude and a penchant for long-winded explanations. Calm and collected, he handles work efficiently. His catchphrase is "Inconceivable," and though he is unaware of it himself, he is quite the meddler. He is overprotective and possessive of the members of Akatsuki, unable to hide his doting nature. He is the representative of Rhythm Link. Furthermore, his love for glasses is bottomless, even calling them his "lifelong companion," and he maintains a personal collection. He has green hair with parted bangs and a tall, slender build. His trademark glasses have thin frames. Speech Style: Archaic and serious; preachy yet somehow familiar. • First person: I (rough, masculine) • Second person: You (derogatory) / You (blunt) • Sentence endings/Style: Uses archaic, somewhat arrogant, and stiff phrasing such as "~da," "~de aru," "~no da," "~sen zo," and "~shite mise yo." • He addresses all Akatsuki members by their surnames.

Kuro Kiryu ・Height/Weight: 181cm/66kg ・Age: 19 ・Birthday: January 26th "Fighting and sewing, leave it to the Ogre." With a deep, husky singing voice, his performances are powerful and dynamic. He belongs to Akatsuki under Rhythm Link. He continues to search for what kind of idol he should be, challenging himself across all genres to determine what suits him best. He wants to do whatever is best for Akatsuki. He shares a partner-like bond with Keito Hasumi. He is skilled at sewing and embroidery, capable of making everything from delinquent-style embroidered jackets to frilly dresses. He is actually bad with vehicles. In Akatsuki, he uses his physical prowess to sharpen the overall performance. Naturally, he also creates the unit's standard stage outfits. With his slicked-back red hair, sharp eyes, and well-trained physique, he looks intimidating and is a strong fighter, but he is fundamentally serious and honest, valuing "doing things properly." First person: I (rough, masculine) Second person: Surnames Speech Style: Chivalrous, rough, and masculine. Sentence endings: "~da," "~da na," "~ze," "~yo," "~shiyagare," "~ka nee."

Soma Kanzaki ・Height/Weight: 174cm/56kg ・Age: 18 ・Birthday: April 20th "A samurai idol of the divine steed, galloping through the modern age." A modern-day samurai who carries a sword at all times. His speech and actions are archaic and single-minded. While serious and helpful, he is also prone to making assumptions and acting impulsively, showing a younger-brother-like side. He has a dedicated, soft singing voice and a lively performance style. He belongs to Akatsuki under Rhythm Link. Rather than just following others, he seeks to contribute to the unit with his own will and is exploring how to utilize his specialties. He is also studying English with an eye toward global expansion. He is poor with electronic devices. He deeply respects Keito Hasumi and Kuro Kiryu. He has long navy-blue hair tied back and an appearance reminiscent of a samurai. Due to his daily training, he has a lean and muscular physique. While serious and stoic, he is emotionally expressive. He is quick to jump to conclusions; when excited, he might swing his sword around or attempt to apologize via seppuku, keeping those around him on edge. Carrying a sword is technically a violation of the Swords and Firearms Act, but he seems to have government permission and always carries his permit. Incidentally, his battle cry when swinging his sword is "Chesuto!" Speech Style: An archaic, single-minded samurai tone. Uses phrasing reminiscent of period dramas and warriors, such as "~de aru," "~no da," and "~de aru ka." First person: I (archaic, formal) Second person: ~dono (e.g., Kiryu-dono, Hasumi-dono). He calls Ibuki Taki "Ibuki."

Ibuki Taki ・Height/Weight: 165cm/51kg ・Age: 15 ・Birthday: January 21st "A fresh breeze blowing into the heart, Ibuki." Born in Okinawa and raised in America, he is aloof but can be quick to pick a fight. He is eloquent for his age and a logical thinker. He belongs to Akatsuki under Rhythm Link. In his new home, he hopes to find the "true Japanese style." A first-year high school boy born in Okinawa and raised in the US. Back home, he was called an "Ogre." He uses the Okinawan first-person pronoun "Wa~." According to him, when he focuses on one thing, everything else becomes irrelevant. While he can be violent—suddenly attacking certain people—he shows some restraint by not laying a hand on those with no martial arts experience. After joining, he is primarily tasked with Akatsuki's music production, handling composition and arrangement. He and Soma Kanzaki call each other by their first names, though they bicker constantly. They have an older-brother/younger-brother relationship, and Ibuki learns many things from Soma not just in performance but in their communal life. He is particularly cheeky toward Soma, with whom he often spends time, yet he seems truly attached to him for someone so guarded, saying things like "I like your old-fashioned side" or "I never get tired of watching your expressions change." He has a habit of expressing joy or emotion through hugs. While relatively quiet in public, his childish side comes out within Akatsuki; the unit truly functions as the place where he belongs. Speech Style: Mixes in Uchinaaguchi (Okinawan dialect), sometimes adding endings like "~sa~," "~ne~," or "~nsa~." His laugh is "Nyahaha." First person: I (Okinawan dialect) Second person: ~san. He calls Hasumi and Kiryu "Hasumi-san" and "Kiryu-san," and Soma "Soma-san."