June 2006,Matano was announced as a second generation member of Hello! Pro Kenshuusei along with Ogura Manami,Mano Erina,Saito Kotomi and Koyanagi Misa after winning the "Up Front Group "Egg" Audition".
In 2007, Matano became an official member of the Hello!Pro Eggs.
In June 2009,after the formation of S/mileage,Tsunku wanted to do another Hello!Pro Kenshuusei group.Tsunku said he was going to have a pratice test with the Kenshuusei (meaning he was going to watch them sing and dance,and chose which ones should form the group).After watching Koyanagi and Matano performed for him,he said both of them surprised him more because of their performance skills at young age (Koyanagi was eleven at the time,and Matano was ten).Tsunku chose them to form the group,as he called them in for a "meeting",but surprised them and told them that they were graduating from the Hello!Pro Kenshuusei,to form the group.Five days after the meeting,he chose the name Y.okatta for the group,meaning that both girls were successful in passing the test.
Y.okatta's debut single was "Hinihini Onna noko,Yora wa Heroine!".
Matano was featured in Y.okatta's debut studio album,#1 Y.OKATTA MC.2.
Y.okatta had their first spring solo tour,called Y.OKATTA Concert Tour Spring 2010 ~MC.2~..During the concert,merchandise was sold and their member colors were revealed (Koyanagi-Orange,Matano-Aquamarine).
September 8,it was announced that Y.okatta,Hello!Pro Kenshuusei member Takagi Sayuki,and former Morning Musume member Nakazawa Yuko would be participating in the stage play,ICHIDO Jinsei no Jikan de (Once in A Life Time).The stage play ran from September 12-September 18
August 29,both Matano and Koyanagi opened a blog,mainly for Y.okatta's fall tour.
May 28,it was announced that Y.okatta would be doing a stage play based on the anime,Wide Awake Dreams.It will run July 8,2013 to July 18,2013.
- Name: Matano Maho (俣野真帆)
- Nicknames: Matamaho (マタ真帆),Ma-tan (馬タン)
- Birthdate: July 11,1999 (age 13)
- Birthplace: Saitama,Japan
- Bloodtype: O
- Hello!Project Status
- 2006-04-24 Egg
- 2009-06-20 Egg Hatched
- 2009-06-20 Y.okatta Member
- UP FRONT PROMOTION Status
- 2009-06-20 Member
- Y.okatta Member Color: Aquamarine
- Favorite Food: Ramen
- Favorite Person in The World: Koyanagi Misa,Parents
- Looks Up To: Murakami Chiyo,Koharu Kusumi & Wada Ayaka
- Hello!Project Groups
- Hello!Pro Kenshuusei (2006-2009)
- Y.okatta (2009-present)
- MoKanBeKiMaSu/BekimasuY (2011-2012)
- H.P SUPER IDOLS (2012-present)
- Double X (2013-present)
Singles Participated In
- Hinihini Onna noko,Yoru wa Heroine! (Debut)
- YOKATTA DUO
- Tsuyoku Naru
- Care (less)
- KEEP IT UP!
- Utsukushii (minikuimasen!)
- Aa,Watashi No Ai
- Omoikiri Tanoshimu
- Suppin HATARAKU!/The Best Wishes
- Amai ASIA
- Makeruna Wasshoi! (BekimasuY)
- Busu ni naranai Tetsugaku (MoKanBeKiMaSu Ongaku)
H.P SUPER IDOLS
-  Wide Awake Dreams
- [2010-2012] Misa to Maho ~YOKATTA!~
- [2011.09.12~09.18] ICHIDO Jinsei no Jikan de
- [2013.07.08~07.18] Wide Awake Dreams
- [2011.01.19] Cries.
-  Suugaku♥Joshi Gakuen
- [2011.04.13] Matamaho.
- [2012.07.13] MATA NIKKI
- [2013.06.11] Mahohohohoho.
- [2009.07.20] Wide Awake Maho!
- [2010.02.13] One Step. (with Koyanagi Misa)
- [2011.08.25] Natsu Y.okatta! (with Koyanagi Misa)
- [2011.09.11] Muchuu ni Naru (with Koyanagi Misa,S/mileage and Chisana Hana)
- [2012.12.23] Eien Ni Iku,Y.okatta! (with Koyanagi Misa)
- [2013.04.12] HAPPIEST. (with Koyanagi Misa)
- [2011.04.14] Matamaho. Making DVD
- [2012.05.04] MAHO! (e-Hello!)
- [2012.12.13] Maho-Fuyu
- [2013.06.11] Maho no Day! (e-Hello!)
- [2009.09.23] Welcoming ~Y.OKATTA~ (with Koyanagi Misa)
- [2011.01.29] Opening Ceremony (with Koyanagi Misa)
- [2012.12.09] Chou Nekutai (with Koyanagi Misa)
- Matano is often ranked in the "Weak Level" or "Gettin' There Level" in singles.
- Matano is very athletic.
- Matano was the youngest member of the Hello!Pro Kenshuusei,and is currently the youngest member of Y.okatta.
- Is the shortest member of Y.okatta
- She is highly promoted
To be finished~