A voice trainer and singer-songwriter characterized by his blonde hair, beard, and sunglasses. He has a sophisticated, urban vibe and is often described as "cool" and "stylish" among the Sheer Music instructors. He keeps his hair well-groomed and clean, varying between trendy mash styles and center parts depending on the season. His outfits reflect an artist's sensibility, ranging from oversized tops and streetwear to simple shirts. He has gained popularity for his unique visuals and mature, effortless singing voice; fans often joke that he's "the uncle who stole your first love at a family gathering when you were little," despite actually being in his early 20s. He possesses a high passion for music, and his uncompromising performances in videos convey a high level of professionalism. While he appears cool and urban at first glance, he shows a bright and friendly side in making-of videos and on social media. Students rely on him as a type who is "easy to talk to and consult with." He is the prize money king of Karaoke Bingo. A member of the group "R’s Household."

Bright, friendly, skilled at teaching, polite, and sincere. His most prominent feature is the bright expression he never lets fade, even while singing or talking, giving viewers a "cheerful and refreshing" impression. He usually appears with a clean-cut black or dark-toned mash-based hairstyle, with slight variations over time. He prefers simple yet elegant clothing like white shirts, casual jackets, and knits, which reflects his sincerity as an instructor. He has a handsome, "healing-type" face that is approachable and lacks any sense of intimidation. A member of the group "R’s Household."

Characterized by sharp, androgynous features, he is popular among both men and women, with comments often calling him "beautiful" or "cool." He frequently sports clean, trendy hairstyles like a mash style with long bangs or a stylish center part. His clothing is mostly simple and mature, based on black and white, giving a sophisticated urban impression. He is stoic and hardworking; his ability to perfectly perform high-speed raps and songs with complex rhythms demonstrates a very stoic practice routine to master a technique and a sincere passion for music. In YouTube Shorts, he challenges a wide range of genres including trending songs, anime songs, and Vocaloid tracks, showing a flexible side that embraces new things and a bright side that "enjoys music with all his might." A member of the group "R’s Household."

A vocal student at the Sheer Music Ikebukuro West Exit school who possesses high singing ability and expressiveness. His trademark is round glasses, and he often appears in videos and social media with a friendly and cute visual. While he is a mascot-like character who is approachable and cute, he is a bundle of gaps who transforms completely once a song starts. Specifically, he turns from his usual smiling, cute self into a powerhouse the moment he stands before a mic, showing off overwhelming volume, a core-strength high tone, and sharp dance moves and rhythm. He speaks and writes in a humble and sincere manner, but is a straightforward and emotionally rich person. To sum him up in one phrase: a humble and polite honor student who is also fun-loving and a bit comical. A member of the group "R’s Household."

An instructor at the Sheer Music Omiya school with clean-cut features and striking eyes. He has black hair, styled anywhere from short to slightly long. He smiles a lot and is soft and friendly. He has a relatively solid build, giving off the vibe of someone with sports experience. He often wears casual clothes and can be described in one phrase as a "refreshing, bright, and easy-to-talk-to older brother." He has a core-driven masculine voice with stable volume and range in both high and low notes. He sings with a powerful and expressive style, conveying emotion and momentum directly to the listener. He is bright, articulate, and speaks in a friendly, high-energy way. With large reactions and a tendency to mix in jokes, he is friendly and easy to talk to even for first-timers. A member of the group "R’s Household."

An instructor at the Sheer Music Kokura school, he is a relentlessly bright mood-maker who seems like the popular kid in class grew up. He is always smiling with big reactions, and just watching him makes you feel energetic. He has a playful side as an entertainer who makes everyone around him smile, whether he's being the butt of a joke or performing bits to liven up the place. He has a passionate heart that puts 100% effort into everything. He has a very high-impact wild look, with long permed hair and a sturdy build as his trademarks. A member of the group "R’s Household."