|Nicknames||Masao, Maashii, Otani Masae aka Himawari|
|Born||February 25, 1982|
|Origin||Miyazaki, Japan (raised in Muroran, Hokkaido)|
|Associated Acts||Melon Kinenbi, 10-nin Matsuri, Sexy 8, 7AIR, H.P. All Stars, Muratani Shimai|
|Joined||February 19, 2000|
|Debut Single||Amai Anata no Aji|
|Last Single||Melon Tea|
|Left||May 3, 2010|
She used to work under the name Otani Masae aka Himawari, a name she chose after annoucning a competition at her blog for a new stage name. Her last release under this name is the 2013 single BOY'S. She also was the member of the Korean pop cover group 4C Crew under the name MELODY.
In addition to her activities as a solo artist and member of 4C Crew, she is also worked as an instructor, in both vocals and dance, for the idol-themed café AKIHABARA Backstage pass.
In May of 2010, Melon Kinenbi disbanded and she decided to leave Up Front Agency. Having the goal of eventually performing her own music. She has yet to sign to a new agency. In December, the former idol will be performing at the IVY HALL in Shibuya for a special event called “X’mas CHAPEL LIVE & SWEETS PARTY.” Currently she plans to begin her transition to a theater actress and will be in some productions next spring.
Otani also recently teamed up with another Melon Kinenbi member, Shibata Ayumi, to make the mail order only photo book, “YOU&I.” The book contains original songs made by Shibata herself, and even came packaged with a CD recording of “YOU&I.” The book is available through the official fan club site which also offers posters, clear files, and a cell phone strap.
In 2011, Otani has so far released two digital singles for cellphone only download via the site mero.jp and will release both of those songs on CD. Her debut song “Killing My Caddy” was put out in extremely limited distribution in August, but will be coming out officially on January 12th. It will be followed up with her second release, “ENDLESS LOVE,” on February 9th. A music video was also released for her second single.
Shortly after, in April, the announcement of her third single was made. It is called «Bangin'» and was marketed as mug-rock, which is a genre apparently made up by Otani herself.
After the release of her third single, she started making her own music releasing indies singles (sold only at her live events).
In 2014, she opened her own web shop, selling t-shirts, clear files, CDs and DVDs.
Her first DVD is called «Otani Masae Birthday Live Birthday + Payday = Everyone Togather«, and could be bought from the site for 3.000 yen.
In 2014 she stopped using the stage name Otani Masae aka Himawari. Her releases after this credits her as Otani Masae.
In 2015 her online shop closed, and in April she released her first mini-album, called «33». Her shop later re-opened.
As part of a Japan/Korea music exchange, Otani announced that she will be the newest member of Korean artist group named 4C CREW. To be involved with a K-POP group is something that she has always wanted to do. She will work under the name MELODY. Their first live has been decided "4C CREW SHOWCASE" at the Shin-Okubo R & B bar on 2/27. 
On 2/24 at 8pm, OG member Masae Otani AKA Melody is coming to the H!P Shop in Akihabara for a talk show in commemoration of joining her new crew "4C Crew". They will also hold a janken tournament for goods. A 4C CREW mini album, poster and T-shirt will be sold.
Her last mention with the group on their twitter is in May 2016. Shortly after the absence of MELODY and SANA was adressed and 4C CREW continued on as JS & KyonA from 4C CREW until their last twitter post in June, 2017. It now says they're on hiatus.
In 2016 Murata Megumi and Otani Masae announced at the beginning of the year that they were going to hold a live event in the fall. They sang six songs; two cover songs in English, as well as covering Taiyou to Ciscomoon, Max, and two of their own songs from Melon Kinenbi (Eros and Denwa Matteimasu).They held several live events as a duo, and announced the release of their first single in March 2017. Their group name is Muratani Sisters (村谷姉妹; Muratani Shimai), a combination of the kanji in their last name (村 Mura from Murata, and 谷Tani from Ohtani).
In 2017 Muratani Shimai released the CD Single Reborn. It was sold exclusively at the live event at their "Muratani Todoro no Enshuai" (むらたに☆とどるの恩楽会) event at Shinjuku Loft with no plans of a general distribution. Merchandise from the event was however later (in April) made available for purchase at an online store.
Ohtani is sporadically releasing new songs, and promotes her music by holding live events at clubs.
- Name: Otani Masae (大谷雅恵)
- Nicknames: Masao, Maashii
- Stage Names:' Otani Masae aka Himawari
- Birthday: February 25, 1982
- Birthplace: Miyazaki, Miyazaki Prefecture, Japan (raised in Muroran, Hokkaido)
- Blood type: O
- Height: 160cm
- Hobbies: Enjoying music
- Favorite colors: Garish colors
- Favorite flowers: Cockscomb
- Favorite season: Summer
- Favorite saying: "Dream + effort = reality"
- Favorite food: Raw food, Tuna
- Disliked food: Sweet and sour food
- Favorite songs: Kiseki no Hana, Endless Youth, Judas
- Looks up to: Beyonce Knowles, Lady Gaga
- Hello! Project groups:
- Shuffle units:
- Mini album
- [2015.04.19] 33
- [2002.02.20] The Douyou Pops 2 Haru no Uta Shuu ((ザ・童謡ポップス2 春のうた集)
- [2002.06.05] The Douyou Pops 3 Natsu no Uta Shuu (ザ･童謡ポップス3 夏のうた集)
- [2002.09.04] The Douyou Pops 4 Aki no Uta Shuu (ザ･童謡ポップス4 秋のうた集)
- [2002.12.04] Shinsaku Douyou Pops 1 ( 新作童謡ポップス（一）)
- [2003.03.05] Sougen no Hito Original Cast Ban (ミュージカル『草原の人』オリジナルキャスト盤) (musical soundtrack)
- [2003.03.26] Shinsaku Douyou Pops 2 (新作童謡ポップス（一）)
- [2004.07.14] Hello! Project Radio Drama Osaka Vol.1 (ハロー！プロジェクト ラジオドラマ 大阪編 Vol.1)
- [2011.01.12] KILLING MY CADDY
- [2011.02.09] ENDLESS LOVE
- [2011.04.06] BANGIN'
- [2012.04.28] JUMP!!!!!
- [2012.06.30] MUSIC
- [2013.02.25] BOY'S
- [2014.02.25] CALL ME POP
- [xxxx.xx.xx] Merry Christmas Special Mix CD
-  Flash 
-  Gale 
- Split Single
- [2014.10.10] my love (with Natural Born)
- [2007.12.12] 6gatsu no Sunshine (6月のサンシャイン)
Back-up singer Edit
- [2012.08.29] Nanja Korya?! (Track #2)
Singles Featured InEdit
- Amai Anata no Aji
- Kokuhaku Kinenbi
- Denwa Matteimasu
- This is Unmei
- Saa! Koibito ni Narou
- Natsu no Yoru wa Danger!
- Akai Freesia
- Chance of LOVE
- MI DA RA Matenrou
- Kawaii Kare
- Namida no Taiyou
- Champagne no Koi
- Nikutai wa Shoujiki na EROS
- Onegai Miwaku no Target ~Mango-pudding Mix~
- Charisma, Kirei
- Onegai Miwaku no Target (Indie)
- DON'T SAY GOOD-BYE (Indie)
- Pinchi wa Chance - Baka ni Narou ze! (Indie)
- sweet suicide summer story (Indie)
- Seishun-on-the-Road (Indie)
- Melon Tea (Indie)
H.P. ALL STARSEdit
Hello! Project Seikatai Edit
Muratani Shimai Edit
 Otani Masae Birthday Live Birthday + Payday = Everyone Togather (01. BOY’S 02. BANGIN’ 03. ENDLESS LOVE 04. MUSIC 05. JUMP!!!!! 06. Killing My Caddy 07. Realize 〜アンコール〜 08. BOY’S)
-  Musical Sougen no Hito (ミュージカル 草原の人; Musical Prairie Girl)
-  Edo Kara Chakushin!? ~Timeslip to Kengai!~
-  Sukoshi Hanarete, Soko ni Ite (すこし離れて、そこに居て)
- [2010.03.07-22] Melon Kinenbi Monogatari ~DECADE OF MELON KINEN-BI~
- [2010.09.01-05] Kizame, Waga Hada ni Kimi no Ibuki wo
-  Sukeban Deka Codename Asamiya Saki (スケバン刑事 コードネーム＝麻宮サキ)
- She said in a 2004 interview that the person she respects the most is Beyonce Knowles. In her blog, she says that she respects Lady Gaga.
- She was one of the MCs for the Hello! Project Shinjin Kouen June 2009 ~Nakano STEP!~.
- After leaving Up Front in 2010 she started to work part time at a cafe while working toward her new goals.
- She is known for frequently changing her hair colour as seen throughout the various singles, albums and performances of Melon Kinenbi.
- Only one of her singles, ENDLESS LOVE, has a music video.
- She often dyes her own hair.
- Her motto is "Dream+Effort=Reality"
- Her favorite food is tuna.
- Her favorite place is New York.
- She wants to get married.
- Her favorite song is "Judas" by Lady Gaga.
- Her favorite artists are P!nk and Lady Gaga.
- She appeared as a special guest at Shimizu Saki's 22nd birthday event to give a surprise birthday message to Saki.
- At her official instagram she says "The dream is to sing in Korea" (written in Korean and Japanese).
- ↑ Official Gekijyo Page
- ↑ otanimasae Marcy's SHOP
- ↑ Newest member confirmed by 4C CREW twitter
- ↑ Otani's blog post about the announcement
- ↑ Otani's twitter announcement
- ↑ 〜Supecial Guest 情報〜 4C CREW @Official_4CCREW 
- ↑ ＜お知らせ＞ 5/29 雑食中心はスケジュールの都合上、Melody SANA 2名の出演はございません。 お楽しみにして下さっていた皆様申し訳ございません。 KyonA Jessica (JS & KyonA )2名 ver.で出演致しますので応援宜しくお願い致します。
- ↑ 無期限活動停止。今迄ありがとうございました Google translate: Stop indefinitely. Thank you for coming
- ↑ 村谷姉妹CD
- ↑ 
- ↑ 
- ↑ 언젠가 한국에서 노래하고 싶어 (夢は韓国で歌うこと🇰🇷)