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| Kotaro Hasumi |
CLOUDTENPEDIA - Kotaro Hasumi (蓮水 航太朗, Hasumi Kōtarō, born February 7) is a Japanese singer, dancer, and actor. He is a first-generation member of the theater boy group Cloud ten, a 30-member male artist project comprehensively produced by Yasushi Akimoto. Hasumi is known for his bilingual communication skills, his dedication to dance—particularly the foundational technique of isolation—and his extensive overseas experience.
Early Life and Background
Hasumi was born on February 7 in Osaka Prefecture, Japan. From a young age, he was exposed to international environments, which fostered a deep interest in foreign cultures and music. This early exposure led him to develop strong multilingual communication abilities, a trait that would later become one of his defining characteristics as a performer.
According to information released in conjunction with his debut, Hasumi is a student at Ritsumeikan University. He has pursued higher education alongside his entertainment career, balancing academic responsibilities with the rigorous training schedule required of a theater boy group member.
His background in dance began in childhood, though he has noted that he did not start formal dance training at a very young age. Instead, his passion for dance developed over time, and he approached it with exceptional discipline. He has described himself as having been "more passionate than anyone" about dance, consistently seeking ways to improve through lessons and independent practice.
Career
Pre-Debut Activities
Before joining Cloud ten, Hasumi participated in numerous auditions for artist and idol positions. While he had not achieved a public debut prior to Cloud ten, these experiences shaped his resolve and clarified his goals. He has stated that the audition process reinforced his desire to bring smiles and energy to people, and to become someone who can support others in taking their first steps toward a challenge.
In his youth, Hasumi also performed as a child dancer. In November 2021, he appeared as a kids' dancer at a live performance by the Japanese dance and vocal group Chotokkyu (Bullet Train). Reflecting on that experience, he expressed gratitude for the opportunity to dance on a large stage and noted that it motivated him to continue practicing diligently.
Joining Cloud ten
On April 23, 2026, Cloud ten was officially unveiled in Tokyo as a new theater boy group project produced by Yasushi Akimoto. The project was developed through a collaboration between Y&N Brothers, Mitsui Fudosan, and Tokyo Dome, with the aim of cultivating the next generation of male artists. Nationwide auditions were held beginning in the summer of 2025, and after a final training camp, 30 members were selected.
Hasumi was announced as one of the 30 first-generation members, listed alongside performers such as Seiji Ueno, Toma Uji, Ayumu Owada, Reiko Komai, Hiroto Seki, Ryu Tomizawa, Motoki Hiraoka, Ryoto Fukushima, Kensuke Funamizu, and Kiyohide Mochizuki. The project name "Cloud ten" is said to embody the desire to surpass "Cloud nine"—a phrase representing ultimate happiness—and to deliver a level of joy that exceeds even that ideal.
In interviews following the announcement, Hasumi described his selection as a moment of both joy and renewed commitment. He stated that being chosen through the camp-based audition process made him realize the importance of his original goal: to make people smile and to support others in their own challenges.
Theater Debut and Early Performances
Cloud ten officially began its activities with the opening of its dedicated theater, "Cloud ten THEATER," on the sixth floor of DiverCity Tokyo Plaza in Koto Ward, Tokyo, on August 2, 2026. The inaugural performance, titled "We're Cloud ten," was held before a sold-out audience of approximately 300 people.
For the first-day performance, the 30 members were divided into three rotating teams, with 11 members performing each day. Hasumi was part of the first-day lineup, appearing alongside Seiji Ueno, Toma Uji, Ayumu Owada, Reiko Komai, Hiroto Seki, Ryu Tomizawa, Motoki Hiraoka, Ryoto Fukushima, Kensuke Funamizu, and Kiyohide Mochizuki. The performance opened with the title song "We're Cloud ten" and featured a total of 16 songs, including encores.
The theater itself was designed with a concept inspired by Off-Broadway small theaters in New York, featuring a U-shaped seating arrangement that surrounds the stage. The front row is positioned just one meter from the stage, creating an intimate atmosphere in which performers and audience members can make eye contact easily. This proximity has become a defining characteristic of Cloud ten's live performances.
Tokyo Girls Collection Appearance
On September 19, 2026, Cloud ten made its first appearance at a major external event as the opening act for the 43rd MyNavi Tokyo Girls Collection 2026 Autumn/Winter, held at Yokohama Arena. Hasumi was among the 11 members selected to represent the group on this occasion, performing alongside Seiji Ueno, Toma Uji, Ayumu Owada, Reiko Komai, Hiroto Seki, Ryu Tomizawa, Motoki Hiraoka, Shuto Fukami, Kensuke Funamizu, and Kiyohide Mochizuki.
The group performed their original song "Gomen Ai Koso Subete" (Sorry, Love Is Everything) in red-themed costumes. The appearance marked a significant step in expanding Cloud ten's visibility beyond their dedicated theater audience. Fellow member Ryu Tomizawa commented that it was a great honor to stand on the same stage as renowned artists and models, and expressed determination to deliver the full-force performance they had cultivated at the Odaiba theater.
Artistry
Dance and Performance Style
Hasumi has identified dance as one of his primary strengths. While he did not begin formal training at a very young age, he has approached dance with exceptional dedication, consistently prioritizing it among his activities. He has stated that he considered what he could master to a level that no one else could match, and chose to focus on isolation—the foundational dance technique involving the independent movement of body parts. He has expressed confidence that his isolation skills are unmatched among the Cloud ten members.
His performance style has been described as sharp and precise. In coverage of Cloud ten's theater performances, his dancing has been noted for its crispness and ability to elevate the energy of the venue.
Multilingual Communication
Beyond dance, Hasumi's multilingual communication ability is a defining aspect of his profile. Growing up with close exposure to international environments, he developed a strong interest in foreign countries and cultures. He has traveled abroad extensively and has participated in international gatherings where he engaged with peers from around the world on global issues.
This international perspective informs both his artistic sensibilities and his personal philosophy. He has expressed a desire to use his experiences to connect with diverse audiences and to serve as a bridge between cultures.
Musical Influences and Interests
Hasumi's hobbies include exploring foreign music and cultures as well as traveling abroad. His interest in global music and cultural exchange has shaped his artistic identity within Cloud ten. He has also been noted for his disciplined and stoic approach to self-improvement, traits that have earned him the informal description of a "bilingual, stoic, hot-blooded prince" in Japanese media coverage.
Public Image and Reception
Hasumi has been characterized in Japanese entertainment media as a bilingual and disciplined performer with a passionate approach to his craft. The description of him as a "hot-blooded prince" reflects both his earnest personality and his commitment to continuous improvement.
In his own words, Hasumi has articulated a clear sense of purpose: to make many people smile and feel energized, and to become someone who can support others in taking their first steps toward new challenges. This goal-oriented mindset has been a consistent theme in his interviews and public statements.
Within the Cloud ten fandom, whose members are known as "Winds," Hasumi has established a presence as a member of the first-day performance team and a participant in the group's major external appearances. His MBTI personality type has been listed as ENTP (Debater), a designation that aligns with his communicative strengths and his interest in exploring new ideas and experiences.
Personal Life
Hasumi was born in Osaka Prefecture and is 175 centimeters tall. He is a university student at Ritsumeikan University, pursuing his studies alongside his entertainment career. His special skills include multilingual communication and isolation, while his hobbies include exploring foreign music and cultures, and traveling abroad.
He has described his early exposure to international environments as a formative influence. His experiences abroad include visiting foreign countries and participating in discussions with international peers about global issues. These experiences have contributed to his broad perspective and his ability to communicate across cultural boundaries.
Discography
As a member of Cloud ten, Hasumi has participated in the group's original songs performed at their dedicated theater. The group's repertoire includes "We're Cloud ten," "Kimi wa Kimi da" (You Are You), "Taiyou no Katamukikata" (The Way the Sun Tilts), and "Gomen Ai Koso Subete" (Sorry, Love Is Everything). The performance setlist for the inaugural theater show consisted of 16 songs, including encores.
Filmography and Appearances
Hasumi's public appearances as a Cloud ten member include the group's unveiling event in April 2026, the opening of the Cloud ten THEATER in August 2026, and the opening act performance at the 43rd MyNavi Tokyo Girls Collection 2026 Autumn/Winter in September 2026. As a child, he also appeared as a kids' dancer at a Chotokkyu live performance in November 2021.
Future Goals
Cloud ten members have articulated a collective goal of performing at Tokyo Dome with all 30 members. This ambition has been described as the group's clearest objective, and members have expressed their intention to build toward it by deepening connections with audiences at their dedicated theater. Hasumi's individual goals align with this collective vision, as he has consistently emphasized the importance of supporting others and bringing energy to audiences through performance.