Sayumi Michishige officially became a 6th generation member of the J-pop group Morning Musume, along with Eri Kamei, Miki Fujimoto and Reina Tanaka, on January 19, 2003, when the results of the Love Audition 2002 were made public. Just a few weeks later, she was placed in Morning Musume Otomegumi subgroup, when the group was temporarily divided so it could perform in smaller towns, thereby reaching out to a greater number of fans who couldn’t otherwise have the privilege of watching them perform live. During the spring she—along with the rest of the sixth generation members—made her first concert appearance on the Morning Musume Concert Tour 2003 Spring “Non Stop!” during Yasuda Kei’s graduation.

On July 16, 2003, the 6th generation members (with the exception of Miki Fujimoto) released their first photobook and corresponding DVD, both shot in Hawaii and part of the Alo Hello! (アロハロ!?) series. Their musical debut came shortly thereafter, on July 30, with Morning Musume’s 19th single Shabondama (シャボン玉?). Although Michishige didn’t get many solo lines in the song, one of those instances—in which she shouts “Shabondama”—did get her some attention on TV shows. Towards the end of 2003 Michishige began appearing in the show Revelations of M (Mの黙示録 M no Mokushiroku?), as a regular with ex-Morning Musume member Yuko Nakazawa.

2004 saw her first appearance on an album, Best! Morning Musume 2, and in a movie—”Star Sand Island, My Island - Island Dreamin’” (星砂の島、私の島－～Island Dreamin’～ Hoshisuna no Shima, Watashi no Shima - Island Dreamin’?). During the summer Michishige appeared in her first solo photobook and formed a temporary group called Ecomoni together with 4th Generation Morning Musume member Rika Ishikawa. Originally, the goal of the group was to promote environmental awareness only for the duration of the “Cool Down the Hot Earth” (熱っちぃ地球を冷ますんだ Atchii Chikyū wo Samasunda?) festival, but their popularity led to the members of the group being cast as voice actors for the fourth Hamtaro movie—along with Hello! Project soloist Aya Matsuura, with whom they also released the main theme for the film, entitled Tensai! Let’s Go Ayayamu (天才！Let’s Go あややム Genius! Let’s Go Ayayamu?)—and appear in subsequent festivals.

In 2005 she and Rika Ishikawa released a duo photobook called Angels (エンジェルズ?). Though it has been called an Ecomoni photobook because both members appear in it, officially Angels has nothing to do with the unit. Michishige also appeared as a regular news anchor in the Japanese variety show Hello! Morning for most of the second half of 2005. That same year she was assigned to be a mentor to 7th generation member Koharu Kusumi, with whom she formed a duo called Rainbow Pink in the beginning of 2006. Introducing themselves as “Shige-pink” and “Koha-pink”, the group was featured on Morning Musume’s 7th album, Rainbow 7 (レインボー7?), with the song Rainbow Pink (レインボーピンク?), and subsequently on the 7.5 Fuyu Fuyu Morning Musume Mini! (7.5冬冬モーニング娘。ミニ!?) and Sexy 8 Beat albums, with Wa~Merry Pin Xmas! (わ～MerryピンXmas!?) and Takara no Hako (宝の箱 Treasure Box?), respectively. Michishige is also a member of Hello! Project’s kickball team, Metro Rabbits H.P..

Following in fellow Morning Musume member Miki Fujimoto’s footsteps, Michishige began hosting a radio show entitled “Hypernight - Michishige Sayumi Konya mo Usa-chan Peace” (ハイパーナイト モーニング娘。道重さゆみの今夜も♥うさちゃんピース?) in October 2006. Running approximately 30 minutes per episode, Michishige’s show consists of her answering fan mail and participating in several games, among which saying a given phrase/expression in reverse, and giving general advice to her listeners.

In early December 2006 it was announced Michishige would be given a second solo photobook, entitled Longing (憧憬 Doukei?), released shortly thereafter on January 15, 2007. Shot in Okinawa, the book featured school uniform, swimsuit, simple one-piece and even wet yukata/bathrobe shots, in an attempt to convey a more mature image of the seventeen year old idol.[3]

Michishige has also starred in “Bow30°” (「おじぎ30度」?), an original internet drama created for the purpose of advertising the Family Restaurant chain Gusto (ガスト?), as Ruruka Chī (地井ルルカ?), a novice waitress training under the supervision of her seniors Karin Kinoshita (木下花梨?) (played by Morning Musume’s Ai Takahashi) and Mika Mochizuki (望月深華?) (Reiko Tokita).

The first semester of 2007 remained rather uneventful for Michishige, though, starting the second week of June (on June 9, 2007), she began co-hosting the Young Town radio show as a result of Miki Fujimoto’s Friday magazine scandal and subsequent resignation from Morning Musume. Shortly thereafter she released her first Love Hello photobook and DVD, both shot in the island of Guam.

*Name: Michishige Sayumi (道重さゆみ)
*Nickname: Sayumin (さゆみん), Shige-san (しげさん), Sayu (さゆ), Sayu-chan, Shige-pink
*Birth Date: 1989-07-13
*Birthplace: Ube, Yamaguchi Prefecture, Japan
*Blood type: A
*Height: 160.1 cm (5'3")
*Hobbies: Phone, sleeping everywhere, Tetris
*Special skill: Tetris
*Favorite color: Pink, black
*Favorite sports: Tennis
*Favorite movie: Titanic
*Favorite flowers: Red freesias
*Favorite word: "Tensai" (天才 - "Genius")
*Favorite season: Summer, winter
*Favorite food: Chocolate and Mentaiko spaghetti
*Disliked food: Avocado, Mango
*Favorite song: Go Girl ~Koi no Victory~
*Hello! Project Groups:

-Morning Musume (2003–)
-EcoMoni (2004–)

*Subgroups:

-Morning Musume Otome Gumi (2003–2004)

*Concert Units:

-Hello! Project Akagumi (2005)
-Wonderful Hearts (2006–)

*Shuffle Units:

-2004: H.P. All Stars

*Other:

-Metro Rabbits H.P. (2006–)