December 16, 1996
High Tension Girl of Ebichu (エビ中のハイテンションガール)
Rika Mayama (真山りか) is an idol and a member of Shiritsu Ebisu Chugaku (Attendance Number #3) represented by Stardust Promotion. She is also a part of Stardust Section 3's 3Bjunior and the only original member of Ebichu.
- Nickname: Mayama (まやま)
- Birth date: December 16, 1996
- Birthplace: Tokyo
- Blood type: A
- Height: 154.2 cm
- Hobby: Listening to music, reading, watching anime, manga, being otaku, drinking red bull
- Specialty: Marathon, soccer, make people laugh
- Associated Acts: Shiritsu Ebisu Chugaku (2009-present)
- Attendance Number: 5 → 4 → 3
- "From top it's read as (Mayama-!), from bottom it's read as (Mayama-!). The High Tension of Ebichu↑. Attendance Number #3, Rika Mayama!" -— Introduction line"
- One of the original members of Shiritsu Ebisu Chugaku during its formation on August 4, 2009.
- A self proclaimed anime-otaku. She was introduced to anime and manga by her close friend when she was a third grader. Her favorite anime is Gintama. Her blog posts often mentioned about a number of mangas that she read.
- She is nicknamed "High Tension Girl" because she is always feels excited or in a high tension all days, all 24 hours a day 365 days a year, morning, day and night ("High tension" is a japanese idiom that means "very excited").
- Her dream is become a singer and inspired by Morning Musume. She is also wanted to become a voice actress and idolizes Yukari Tamura. Her voice actress debut is in Nanana's Buried Treasure.
- After becoming a soloist, she stated that her goal is to sing at Animelo Summer Live.
- Her trademark hairstyle in Ebichu is ponytail.
- Her surname, Mayama, is a palindrome meaning read backwards/down-to-up it would still be Mayama.
Rika originally wanted to become a singer inspired by Morning Musume and when she watched Yukie Nakama's acting in Gokusen she wanted to become an actress. She joined Stardust Promotion in 2008 Stardust Promotion audition event titled Haru no Kawasaki Audition. She applied to several other agency auditions yet failed. She sat next to Sumire Fujishiro and began to talk..
On August 4, 2009 she was one of the five 3Bjunior member selected to become the member of Shiritsu Ebisu Chugaku along with Mizuki, Kanon Nanaki, Narumi Uno and Reina Miyazaki. Rika and Mizuki were the only original members remaining in the group during their major debut in 2012.
On September 2, 2014, it was announced that Rika will have her own solo debut single titled Liar Mask. The single was released on November 26, 2014 and is used as the second opening theme for the TV Anime Akame ga Kill!
Discography Participated In
- Indie Singles
- Major Singles
- Limited Albums
- Ebichu no Unit Album Sun Plaza-Ban
- Ebichu no Unit Album Seinenkan-Ban
- Ebichu no Unit Album Saitama Super Arena-Ban
- Stardust Planet
- We are Star
- Ohta Hikaru no Watashi ga Souri Daijin ni Nattara...Hisho Tanaka (August 14, 2009), NTV
- Oshigoto Town (April 5, 2009), BS11
- Tonari no Seki-Kun To Rumi-Chan No jishou Live action (July 27, 2015) (episode-4, 8), MBS
-  Audition
- [2014.02.10] MARQUEE Vol.101 - With Yasumoto and Hoshina
- [2014.02.19] +4 May issue Androider
- [2014.02.20] New Avengers: Secret Invasion band Comments Ad
- She is the oldest member in the group and the only remaining original member of Ebichu as Mizuki left in 2014.
- She is the second member from 3Bjunior's idol group to receive a solo single, the first was Momoko Kawakami of momonaki.
- Natalie Power Push - ナチュラルボーンニコ動世代
- Natalie Power Push - メンバーの変遷でたどるエビ中の歴史
- Natalie Power Push - 私のアイドル道
- Natalie - http://natalie.mu/music/news/114171
- Rika Mayama of Shiritsu Ebisu Chugaku to make her solo debut as a Anime-song singer!
- あうでぃしょーん＼(^o^) ／(真山りか)
- Drama News Network -Shiritsu Ebisu Chuugaku’s Mayama Rika to solo debut as anime song singer
- Akame ga Kill! Staffers Hozumi Gôda, Rika Mayama Join Cast
|Shiritsu Ebisu Chugaku|
|Timeline • Discography • Live Events • Publication • TV Appearances • Go Go Nana Ni San Ni Rei (Alter ego)|
|3. Rika Mayama • 5. Ayaka Yasumoto • 7. Mirei Hoshina|
• 10. Hinata Kashiwagi • 11. Kaho Kobayashi • 12. Riko Nakayama
|Indie||1. Asa no Chime ga Narimashita! • 2. Ebizori Diamond!! • 3. Chime! / Doshaburi Regret • 4. The Tissue ~Tomaranai Seishun~ • 5. Oh My Ghost? ~Watashi ga Akuryo ni Nattemo~ • 6. Motto Hashire!!|
|Major||1. Karikeiyaku no Cinderella • 2. Go! Go! Here We Go! Rock Lee / Otona wa Wakatte Kurenai • 3. Ume • 4. Te wo Tsunagou / Kindan no Karma • 5. Mikakunin Chuugakusei X • 6. Butterfly Effect • 7. Haitateki! • 8. Natsu Daze Johnny • 9. Super Hero • 10. Massugu • 11. Sing-a-long Sing-a-song • 12. Dekadonden|
|Major||Ebichu no Zeppan Best ~Owaranai Seishun~ (indie best) • 1. Chunin • 2. Kinpachi • 3. Anarchy • 4. Ebicracy • 5. Music • 6. Playlist|
|Live Concert DVDs and Blu-Rays|
|Shiritsu Ebisu Chugaku 1st One-Man LIVE • Shiritsu Ebisu Chugaku First Concert: Jaa Best Ten • Shiritsu Ebisu Chugaku Toshiwasure Dai Gakugeikai: Ebichu no Jungle Daiboken • Shiritsu Ebisu Chugaku: Kuruizaki Ebi Road ~Owarinaki Shinkyu~ • Shiritsu Ebisu Chugaku: Ebichu Natsu No Family Ensoku Ryakushite Famien In Kawaguchiko 2013 • Shiritsu Ebisu Chugaku Toshiwasure Dai Gakugeikai 2013: Ebichu no Star Conductor • Shiritsu Ebisu Chuugaku Goudou Shuppatsu Shiki ~Ima, Kimi ga Koko ni Iru~ • Shiritsu Ebisu Chugaku: Ebichu Natsu No Family Ensoku Ryakushite Famien In Yamanakako 2014|
|Former Members||1. Kanon • 1. Mizuki • 2. Narumi Uno • 2. Reina Miyazaki • 4. Natsu Anno • 7. Hinaki Yano • 7. Aika Hirota • 8. Hirono Suzuki • 9. Rina Matsuno • 10. Rio Koike|
|Staffs||Ryoji Fujishita (Chairman) • Yuichi Fujii (Principal) • Kenichi Maeyamada (Music Head Teacher)|