|Nickname|| Masumo (ますも),|
|Birthdate||January 12, 2002|
|Current Age||21 Years Old|
|Agency||Seed & Flower|
|Social Networks||Official Blog / SHOWROOM|
|Idol Career Info|
|Debuted||September 2019 / Sakamichi Kenshusei|
|Emerald Green||Emerald Green|
Masumoto Kira is a member of Sakurazaka46's 2nd Generation.
- Her SHOWROOM audition number was #70. Her nickname during the auditions was Dorokatsu (どろかつ).
- Oshimen: Sugai Yuuka
- Special skills: Solving a Rubik's cube
- She likes cats.
- While she was a Sakamichi Kenshusei, she tried to stop a fight between her cat and a stray cat. As a result, was severely scratched, with the scars taking nearly a year to heal. "Even so, I still like cats" she wrote in her blog.
- She is known for her eccentric character and unique way of doing things.
- She is said to be "in sync" with Kousaka Marino.
- She got along well with Moriya Akane, and was known to come on really strongly to her.
- When it was announced that she and Akane would not perform in the same song for the group's third single, and final single prior to Akane's graduation, she began bawling to the point that the manager had to scold her.
- She revealed that Ozono Momoko was the member who inspired her to audition for the Sakamichi Series.
- She said that Momoko "shone more than anybody else" and that she would continue to light up her heart after her graduation.
- She has made many custom t-shirts for herself and her fellow members.
- For example, on Sugai Yuuka's birthday, she gifted her a shirt of Tomu the cat riding a horse. Also, upon Moriya Akane's graduation, she gifted her a shirt of Momo the cat with the words "cat allergies" in the back.
- On August 19th, passed the Sakamichi Joint New Member Recruitment Audition.
- On September 7th, was announced as a Sakamichi Kenshusei and her Profile Page was uploaded.
- From October 30th to November 21st, participated in the Sakamichi Group Joint Trainee Tour where she centered Sekai ni wa Ai Shika Nai.
- On February 16th, was assigned to Keyakizaka46 during the "Sakamichi Kenshusei Assignment Announcement SHOWROOM".
- On October 14th, Keyakizaka46 was renamed and restarted as Sakurazaka46.
- On June 30th, was featured on the back cover of IDOL AND READ 027, marking her first solo cover appearance.
- Sakamichi Joint Auditions finalist → Sakamichi Kenshusei → Keyakizaka46 2nd Generation → Sakurazaka46 2nd Generation
- She passed the Sakamichi Joint Auditions on August 20, 2018
- Her profile was uploaded to the Sakamichi Kenshusei official website on September 7, 2019
- Promoted to Keyakizaka46 2nd Generation on February, 2020
- Transferred to Sakurazaka46 2nd Generation on October 14, 2020
- Naze Koi wo Shite Konakattan darou? (Nobody's fault)
- Plastic regret (Nobody's fault)
- Sore ga Ai Nano ne (BAN)
- Omotta Yori mo Sabishikunai (BAN)
- Sakurazaka no Uta (BAN)
- Dead end (Nagaredama)
- Sonia (Nagaredama)
- Boku no Dilemma (Samidare yo)
- I'm in (Samidare yo)
- Shakan Kyori (Samidare yo)
- Munen (Sakurazuki)
- Moshikashitara Shinjitsu (Sakurazuki)
- Tamashii no Liar (Sakurazuki)
- Sono Hi Made (Sakurazuki)
- Sakurazaka46 Kochira Yuurakuchou Hoshizora Housoukyoku (2021 - )
- Sakura Hinata Lotti no Senobishiro Radio (2021 - )