Usui Clear

Clear Usui (Japanese: 宇推くりあ, Usui Kuria) is an independent Japanese virtual YouTuber who calls herself a "rocket idol VTuber." She is known for live commentary on rocket launches and for promotional work with JAXA, the Cabinet Office and other organizations involved in space development.

Profile

Item	Detail
Debut	October 10, 2020 (YouTube)
Birthday	July 7 (character setting)
Agency	Independent
Nickname	Ria
Character designer	Clear Usui (self-designed)
YouTube channel	宇推くりあ -★Clear Usui Rocket ch.★-

Career

Clear Usui debuted on YouTube on October 10, 2020. In her lore, she is an alien who came to Earth because of the Love Live! franchise, and her birthday is set as July 7, the day her rocket crash-landed. She has said that she has long been interested in space and that she admires the characters of Love Live!. She became a VTuber to pursue both interests. In 2021, viewers voted her outfit the winner of the Best Fashion Award at Nippon Television's Project V VTuber Awards 2021.

She drew wider attention in February 2023 with her detailed explanation of the aborted first launch attempt of the first H3 test rocket. In March 2023, after the second launch attempt failed, she called on people to support JAXA. In July 2023, she was livestreaming when an Epsilon S rocket engine exploded during a test firing. Afterward, local media briefly interviewed her and used her footage.

In October 2023, she became the public relations ambassador for the Cabinet Office's 6th Space Development and Utilization Awards and appeared on its promotional posters. She worked with the EarthCARE satellite program in 2024. In 2025, she became the ambassador for Michibiki, Japan's Quasi-Zenith Satellite System. Also in 2025, she won a popularity contest on Charaforio, Sanrio's content creation platform. The prize was a 3D model and a performance at Sanrio Virtual Festival 2026.

Activities

Streaming style

Her streams center on watchalongs of rocket launches from around the world, which she narrates with technical explanations. She also sings and plays the ocarina. She has appeared at space outreach events, including a JAXA open campus and the ISS/KIBO Utilization Symposium in 2024 and 2025. In 2026, as part of the Oshisora Project, a plushie and an acrylic panel of her character were sent to the Japanese Experiment Module KIBO on the International Space Station, and she then performed in a space-themed concert. She also took part in a collaboration between JAXA and Liella!, the group from Love Live! Superstar!!.

Music and works

Articles for the astronomy magazine Hoshinavi on the HAKUTO-R lunar program and the XRISM space telescope
Interviews with people in the space industry, including Takafumi Horie
Performance at Sanrio Virtual Festival 2026 using a 3D model produced by Sanrio

Characteristics

She has silver hair and wears a teal dress with rocket motifs. She designed the character and made the Live2D model herself. She used a 3D model from the avatar software V-Katsu until that service ended in 2022, and she debuted a 3D model made by Sanrio in 2026. She has also sponsored rocket and lunar exploration projects, including the first and second H3 test rockets and the miniature lunar rover SORA-Q. She has encouraged overseas viewers to watch her streams and has said she can speak some English.