// Workers AI · dad joke modeWho did Sakamoto Mashiro take to the party? Her mash-hyro friend.

Sakamoto Mashiro
Sakamoto Mashiro
坂本舞白
	Sakamoto in 2022
Born	December 16, 1999 (age 26); Japan
Occupations	Singer; dancer;
	Musical career
Genre	K-pop
Instrument	Vocals
Years active	2022–present
Labels	143 Entertainment; WakeOne; Swing;
Member of	Madein
Formerly of	Kep1er
Signature

Mashiro Sakamoto (坂本舞白, Sakamoto Mashiro; born December 16, 1999), known mononymously as Mashiro, is a Japanese singer and dancer based in South Korea. She first gained recognition as a member of the girl group Kep1er, formed through the reality competition series Girls Planet 999, before departing the group in 2024 to join Madein under 143 Entertainment.^[1]^[2] She made her solo debut on August 19, 2026, with the extended play 24/11 and its lead single "Hotline".^[3]^[4]

Career

Pre-debut activities

Sakamoto was a trainee at JYP Entertainment from 2016 to 2018.^[5]

2021–2024: Girls Planet 999 and debut with Kep1er

Sakamoto rose to prominence as a contestant on Mnet's 2021 reality competition Girls Planet 999, which selected the members of the resulting girl group Kep1er; she went on to begin her music career with the group.^[3] On May 30, 2024, Sakamoto's agencies, WakeOne and Swing Entertainment, announced that she would conclude her activities with Kep1er, alongside fellow member Yeseo, following the group's scheduled Japanese concert, while the remaining seven members renewed their contracts.^[1]^[2] Reports at the time indicated the pair would return to their original agency, 143 Entertainment.^[2]

2024–present: Madein and solo debut

Following her departure from Kep1er, Sakamoto joined 143 Entertainment's new girl group Madein, of which she became the leader.^[3] On July 22, 2026, 143 Entertainment announced that Sakamoto would release her debut solo extended play, 24/11, on August 19, with the lead single "Hotline", which blends afrobeat rhythms with dance-pop.^[3]^[4]^[6]^[7] Ahead of the release, Sakamoto previewed "Hotline" during Madein's first solo concert Madein Link Up held in Kobe, Japan, on July 31.^[3]^[7]

Discography

Extended plays

List of extended plays, showing selected details, selected chart positions, and sales figures
Title	Details	Peak chart positions	Sales
Title	Details	KOR ^[8]	Sales
24/11	Released: August 19, 2026 Label: 143 Entertainment Formats: CD, digital download, streaming Track listing "Hotline" (featuring Bobby) "Make Up" "Bubble Trouble" "Toothbrush" "Hotline" (Inst.) "Make Up" (Inst.)	35	KOR: 3,543^[9]

Singles

List of singles, showing year released, selected chart positions, and name of the album
Title	Year	Peak chart positions	Album
Title	Year	KOR Down. ^[10]	Album
"Hotline" (featuring Bobby)	2026	127	24/11

Videography

Music videos

List of music videos, showing year released and name of the directors
Title	Year	Director(s)	Ref.
"Hotline" (featuring Bobby)	2026	Hyeya (815Video)	^[11]

Filmography

Television shows

Year	Title	Role	Notes	Ref.
2021	Girls Planet 999	Contestant	Placed 8th	^[5]

Notes

1 2 As a member of Kep1er only.

References

1 2 "Kep1er Members Mashiro Sakamoto and Kang Yeseo announce departure from K-pop group". The Express Tribune. May 30, 2024. Retrieved August 17, 2026.
1 2 3 "Kep1er to continue as seven-member group after Mashiro and Yeseo's departure". Korea JoongAng Daily. May 30, 2024. Retrieved August 17, 2026.
1 2 3 4 5 "Madein's Mashiro to drop 1st solo EP". The Korea Herald. July 22, 2026. Retrieved August 17, 2026.
1 2 Lee, Da-gyeom (July 22, 2026). "MADEIN's Mashiro to Make Solo Debut on the 19th of Next Month, Previews New Song at Concert - MK". Maeil Business Newspaper. Retrieved August 17, 2026.
1 2 Kim, Hyun-sik (August 7, 2021). JYP 출신 사카모토 마시로, '걸스플래닛999' 등장...선미 극찬. E Daily (in Korean). Retrieved August 17, 2026.
↑ "Mashiro, a member of the girl group Maydin, to Release Solo Debut Album Next Month". Edaily. July 22, 2026. Retrieved August 17, 2026.
1 2 "Maidin Masiro Confirms Solo Debut On August 19...a new musical challenge". Sportal Korea. July 22, 2026. Retrieved August 17, 2026.
↑
Peak chart positions for extended plays on Circle Album Chart:
- "24/11". Circle Chart (in Korean). August 16–22, 2026. Archived from the original on August 27, 2026. Retrieved August 27, 2026.
↑
Cumulative sales of 24/11:
- "Circle Album Chart – Week 34 of 2026". Circle Chart (in Korean). Archived from the original on August 27, 2026. Retrieved August 27, 2026.
- "Circle Album Chart – Week 35 of 2026". Circle Chart (in Korean). Archived from the original on September 6, 2026. Retrieved September 3, 2026.
↑
Peaks on the Circle Download Chart:
- "Hotline": "Download Chart – Week 34 of 2026". Circle Chart (in Korean). Archived from the original on August 27, 2026. Retrieved August 27, 2026.
↑ MASHIRO - HOTLINE (feat. BOBBY) (Music video). 143 Entertainment. August 19, 2026. Archived from the original on August 20, 2026. Retrieved August 20, 2026 – via YouTube.

External links

Media related to Sakamoto Mashiro at Wikimedia Commons

[Kep1er-1] 1 2 As a member of Kep1er only.

[tribune-2] 1 2 "Kep1er Members Mashiro Sakamoto and Kang Yeseo announce departure from K-pop group". The Express Tribune. May 30, 2024. Retrieved August 17, 2026.

[jad-3] 1 2 3 "Kep1er to continue as seven-member group after Mashiro and Yeseo's departure". Korea JoongAng Daily. May 30, 2024. Retrieved August 17, 2026.

[herald-4] 1 2 3 4 5 "Madein's Mashiro to drop 1st solo EP". The Korea Herald. July 22, 2026. Retrieved August 17, 2026.

[:0-5] 1 2 Lee, Da-gyeom (July 22, 2026). "MADEIN's Mashiro to Make Solo Debut on the 19th of Next Month, Previews New Song at Concert - MK". Maeil Business Newspaper. Retrieved August 17, 2026.

[:1-6] 1 2 Kim, Hyun-sik (August 7, 2021). JYP 출신 사카모토 마시로, '걸스플래닛999' 등장...선미 극찬. E Daily (in Korean). Retrieved August 17, 2026.

[edaily-7] "Mashiro, a member of the girl group Maydin, to Release Solo Debut Album Next Month". Edaily. July 22, 2026. Retrieved August 17, 2026.

[sportal-8] 1 2 "Maidin Masiro Confirms Solo Debut On August 19...a new musical challenge". Sportal Korea. July 22, 2026. Retrieved August 17, 2026.

[9] Peak chart positions for extended plays on Circle Album Chart:
"24/11". Circle Chart (in Korean). August 16–22, 2026. Archived from the original on August 27, 2026. Retrieved August 27, 2026.

[mwAVs] "24/11". Circle Chart (in Korean). August 16–22, 2026. Archived from the original on August 27, 2026. Retrieved August 27, 2026.

[10] Cumulative sales of 24/11:
"Circle Album Chart – Week 34 of 2026". Circle Chart (in Korean). Archived from the original on August 27, 2026. Retrieved August 27, 2026.

"Circle Album Chart – Week 35 of 2026". Circle Chart (in Korean). Archived from the original on September 6, 2026. Retrieved September 3, 2026.

[mwAWs] "Circle Album Chart – Week 34 of 2026". Circle Chart (in Korean). Archived from the original on August 27, 2026. Retrieved August 27, 2026.

[mwAXY] "Circle Album Chart – Week 35 of 2026". Circle Chart (in Korean). Archived from the original on September 6, 2026. Retrieved September 3, 2026.

[11] Peaks on the Circle Download Chart:
"Hotline": "Download Chart – Week 34 of 2026". Circle Chart (in Korean). Archived from the original on August 27, 2026. Retrieved August 27, 2026.

[mwAYU] "Hotline": "Download Chart – Week 34 of 2026". Circle Chart (in Korean). Archived from the original on August 27, 2026. Retrieved August 27, 2026.

[12] MASHIRO - HOTLINE (feat. BOBBY) (Music video). 143 Entertainment. August 19, 2026. Archived from the original on August 20, 2026. Retrieved August 20, 2026 – via YouTube.

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