Triangle

Triangle (also known as T - XYZ) is a band formed by AIP. They debuted on March 7th, 2017.

## Members

**Current**

Triangle/Members: Page of all past and present members of Triangle.

## History

### 2016-2018

On January 9th, 2016 AIP opened an audition for a new girl group.

On March 1st, 2017 the 1st generation of Triangle was introduced. Rise was named Leader and Kame was named Sub Leader. All members of the 1st generation were also previous trainees under other companies prior to the audition.

On July 3rd, 2018 the 2nd generation was introduced.

September 29th, 2018 7th single was the first single to feature the 2nd generation.

December 1st, 2018 Kurumi S, Marina, and Rena were introduced as the 3rd generation.

### 2019-2020

March 1st, 2019 9th single was the first single to feature the 3rd generation.

On April 8th, 2019 Ono and Nanami had joined the group as 4th generation members. It was also announced at this time that the group would be working as a whole and in two teams for more promotions starting then. Rise and Kame at this time were both considered leaders. Team A: Rise (Captain), Kana, Momo, Momoko, Kurumi S, Marina, Ruru, Nanami. Team B: Kame (Captain), Kurumi, Hikaru, Rion, Marie, Rena, Ryo, Mei, Ono.

Team A and Team B's first singles were the first to feature Ono and Nanami as members of Triangle.

On August 7th, 2019 Kurumi and Kana announced their joint graduation for January of 2020.

January 2nd, 2020 Team A 3rd single was the last single to feature Kana.

January 7th, 2020 Team B 3rd single was the last single to feature Kurumi.

On January 16th, 2020 Rion announced her graduation from Triangle. Her graduation was originally set for May of 2020 but was pushed back to the covid outbreak. Rion later graduated on September 7th, 2020.

April 20th, 2020 Team A 4th single: **A Girl** Promotion for this single was held via live stream due to the outbreak.

April 22nd, 2020 Team B 4th single: **The Next Dance** Promotion for this single was held via live stream due to the outbreak.

On June 17th, 2020 Rise and Kame announced they would be graduating from Triangle and AIP at the start of 2021. At the announcement AIP announced as well that the group would go back to focusing more as a whole rather than two teams following the 5th team singles.

August 17th, 2020 Team B 5th single was the last single to feature Rion.

From August 21st to October 19th 2020 Ruru was on hiatus due to a foot injury.

December 1st, 2020 10th single was the last to feature Rise and Kame.

### 2021-2022

On January 2nd, 2021 Rise and Kame graduated from Triangle. Momo was named the groups next leader. Hikaru and Marie were named the sub leaders. This left the group with the members: Momo, Hikaru, Marie, Momoko, Kurumi S, Rena, Ryo, Mei, Ruru, Ono, Nanami. The group announced they would be focusing as one unit now rather than teams as AIP had announced back in June of 2020.

On January 7th, 2021 Momo, Hikaru, and Marie announced the 5th generation auditions for the group. They also announced that the group was working on their first album to be released in June.

June 27th, 2021 the group released their first album. They had updated songs of their 1st-9th singles, 2 new songs, and the A side track-list of the groups 10th single.

On July 1st, 2021 the 5th generation audition winners were announced as Ruu, Nana, Ikumi, and Miki.

On December 6th, 2021 the group released their 11th single. This was the first single to feature the 5th generation.

On January 1st, 2022 Kurumi S and Marina announced they would be graduating in the summer of 2022. Following many discussions Kurumi felt her time with Triangle was nearing its end. Marina wished to study dance abroad now that things were starting to open back up. On January 24th their graduation was set for July 7th, 2022.

On March 16th, 2022 Marie announced she would be graduating on December 22nd, 2022. On her graduation she named Momoko a Sub Leader alongside Hikaru.

### 2023-2026

On January 1st, 2023 the 6th generation was introduced. Trainees Iida Yuriya, Yoshizawa Ayana, and Takahasi Hasumi were announced to make up the 6th generation.

On April 7th, 2023 the group released their 15th single. This was the first single to feature Yuriya, Ayana, and Hasumi.

On August 1st, 2025 Momo, Hikaru, and Momoko announced their joint graduation for January 31st, 2026. The three 2nd generation members thanks all of the past and present members, staff, and fans for their support and love for the members. Momo stated that being a member of Triangle and later the leader was a memory she'd never forget. This graduation would mark the end of the groups most stable line-up at 3 years and 25 days.

On August 8th, 2025 AIP opened auditions for the 7th generation.

On January 15th, 2026 the audition winners for the 7th generation were introduced. This was the first time a generation had not been added in ver 3 years.

On January 31st, 2026 Momo, Hikaru, and Momoko graduated from Triangle. Ryo was named the groups next leader and Rena was named the sub leader.

On July 1st, 2026 Ono announced her graduation for December 16th, 2026.

On August 6th, 2026 Ryo announced her graduation for April 7th, 2027.

### 2027-

At Ryo's graduation on April 7th, 2027 Rena was named Leader. This marked the first time a Sub Leader became Leader of the group. Mei and Ruru were named Sub Leaders.

## Discography

### **Singles**

1. March 7th, 2017 1st single: **My Life Is Not A Show** [First to feature Rise, Kame, Kurumi, & Kana]
2. June 11th, 2017 2nd single: **Blue Butterfly**
3. September 15th, 2017 3rd single: **Climb**
4. December 19th, 2017 4th single: **Untouched Love**
5. March 23rd, 2018 5th single: **Wait A Moment**
6. June 27th, 2018 6th single: **Do you Understand**
7. September 29th, 2018 7th single: **Pretty Girl** [First to feature Momo, Hikaru, Rion, Marie, & Momoko]
8. December 30th, 2018 8th single: **Feels Like Not A Day Has Passed**
9. March 1st, 2019 9th single: **The Ability To Go On** [First to feature Kurumi S, Marina, Ryo, Rena, Mei, & Ruru]
10. December 1st, 2020 10th single: **Away With Wind; Self-Aware; Love Circle.** [Last to feature Rise and Kame]
11. December 6th, 2021 11th single: **Peach; How Do You Like That; Disco** [First to feature Ruu, Nana, Ikumi, & Miki]
12. April 7th, 2022 12th single: **Plastic; SLOUTION** [Last to feature Kurumi S & Marina]
13. August 9th, 2022 13th single: **Feel Like Twenty; PLASTIC WORLDS COLLIDE**
14. December 15th, 2022 14th single: **Age; Route B; Mirrors** [Last to feature Marie]
15. April 7th, 2023 15th single: **Final Dance;** **BEATS** [First to feature Yuriya, Ayana, & Hasumi]
16. August 12th, 2023 16th single: **Renai; Monster; One of You**
17. April 20th, 2024 17th single: **Umei; Before Love**
18. September 1st, 2024 18th single: **100; Fate Stars**
19. January 5th, 2025 19th single: **CHA-RA-RA-CHA!!; Girls Diamond**
20. July 20th, 2025 20th single: **Mini; Hey Mr. Post-Man**
21. December 19th, 2025 21st single: **Our Dilemma; Fate Brought Us Here; It's Now Or Never** [Last to feature Momo, Hikaru, and Momoko]
22. July 12th, 2026 22nd single: **Freshness; I Want To Be Loved** [First to feature Honoka, Mifu, Karin, Hana, and Reina K]
23. November 24th, 2026 23rd single: **Let Me Dress Tonight; 4th Edition** [Last to feature Ono]
24. March 19th, 2027 24th single: **I Need You; Floral Dress** [Last to feature Ryo]
25. December 29th, 2027 25th single: **MERRY CHRISTMAS WORLD; Isolation**

### **As Team A and Team B**

1. July 6th, 2019 Team A 1st single: **Blooming Wind** [First to feature Nanami]
2. July 13th, 2019 Team B 1st single: **Our Own Way** [First to feature Ono]
3. October 12th, 2019 Team A 2nd single: **Good Days**
4. October 17th, 2019 Team B 2nd single: **You!**
5. January 2nd, 2020 Team A 3rd single: **I Know You~** [Last to feature Kana]
6. January 7th, 2020 Team B 3rd single: **Into the Future** [Last to feature Kurumi]
7. April 20th, 2020 Team A 4th single: **A Girl**
8. April 22nd, 2020 Team B 4th single: **The Next Dance** [Last to feature Rion]
9. August 10th, 2020 Team A 5th single: **Cuddles**
10. August 17th, 2020 Team B 5th single: **Hold Me Close**

### **Albums**

1. June 27th, 2021 1st Album: **Kataomoi Original; Eien; My Life Is Not A Show (Updated); Blue Butterfly (Updated); Climb (Updated); Untouched Love (Updated); Wait A Moment (Updated); Do you Understand (Updated); Pretty Girl (Updated); Feels Like Not A Day Has Passed (Updated); The Ability To Go On (Updated); Away With Wind (10th single VER.); Self-Aware (10th single VER.); Love Circle (10th single VER.).**
2. December 19th, 2023 2nd Album: **SKIP; Our Home Base!;** **Peach (Updated); How Do You Like That (Updated); Disco (Updated); Plastic (Updated); SLOUTION (Updated); Feel Like Twenty (Updated); PLASTIC WORLDS COLLIDE (Updated); Age (Updated); Route B (Updated); Mirrors (Updated); Final Dance (15th single VER.); BEATS (15th single VER.); Renai (16th single VER.); Monster (16th single VER.); One of You (16th single VER.).**
3. May 9th, 2025 3rd Album: **Jut Go!; Lover's Rival; Umei (17th single VER.); Before Love (17th single VER.); 100 (18th single VER.); Fate Stars (18th single VER.); CHA-RA-RA-CHA!! (19th single VER.); Girls Diamond (19th single VER.); Blooming Wind (UPDATED); Over Own Way (Updated); Good Days (Updated); You! (Updated); I Know You~ (Updated); Into the Future (Updated); A Girl (Updated); The Next Dance (Updated); Cuddles (Updated); Hold Me Close (Updated).**
4. September 14th, 2027 4th Album: **Tell Me How the World Is; You're Fine, You Got This; Mini (Updated); Hey Mr. Post-Man (Updated); Our Dilemma (21st single VER.); Fate Brought Us Here (21st single VER.); It's Now Or Never (21st single VER.); Freshness (22nd single VER.); I Want To Be Loved (22nd single VER.); Let Me Dress Tonight (23rd single VER.); 4th Edition (23rd single VER.); I Need You (24th single VER.); Floral Dress (24th single VER.)**