Question: Maaya Sakamoto had a major role in a series that follows who?

Context paragraphs:
Yūho Iwasato: Yūho Iwasato (岩里 祐穂 , Iwasato Yūho , born December 3, 1957 in Niigata City) is a Japanese songwriter, for which many of her songs have been used in anime.  She is also known by another pen name of Mio Iwasato.  In addition, she has written lyrics for some Japanese singers including Maaya Sakamoto, Miki Imai and many others.  She is known to be a close friend (in working field) of Miki Imai, Yoko Kanno, Akino Arai and also Maaya Sakamoto.

Single Collection: Nikopachi: Single Collection+ Nikopachi (シングルコレクション＋　ニコパチ ) is Maaya Sakamoto's second singles collection.  The limited edition version of the album was available with a DVD containing music videos.  The album debuted at #3 on the Oricon weekly charts and sold 69,966 copies, this is Maaya Sakamoto's best selling album so far.

Down Town / Yasashisa ni Tsutsumareta Nara: Down Town / Yasashisa ni Tsutsumareta Nara is Maaya Sakamoto's nineteenth single.  "Down Town" is used as an opening theme for the anime series "Soredemo Machi wa Mawatteiru" while "Yasashisa ni Tsutsumareta Nara" is the opening theme for the OVA "Tamayura".  The original version of this song was released in 1974 by Yumi Arai, who was also its composer and lyricist, and was used as the ending song for "Majo no Takkyūbin".  It is Sakamoto's first single to come in CD+DVD and CD only editions.

Triangler: Triangler (トライアングラー ) is Maaya Sakamoto's sixteenth single.  The title track was used as the opening theme for the popular mecha anime "Macross Frontier" and won the 2008 Animation Kobe award for best theme song.  The single reached number 3 on Oricon weekly chart and so far is the best selling single of Maaya Sakamoto.

Dive (Maaya Sakamoto album): Dive is the second studio album released by Japanese singer Maaya Sakamoto.  As the first album, Yoko Kanno produced this album as well.  Lyrics of the album's songs were written by Sakamoto and Yūho Iwasato, except "Baby Face" and "Heavenly Blue" were co-written with Tim Jensen.

30Minutes Night Flight: 30Minutes Night Flight is Maaya Sakamoto's second mini-album.  It was released in Japan on March 21, 2007 as a normal album version and a Limited Edition containing a DVD.  The limited edition DVD came with a short film created by Production I.G.  The album is also available is a collectibles box set, commemorating her tenth anniversary as a singer.  The set, called "30Minutes Night Flight Hatsubai Kinen Special Box" contains a sheet of stamps (with Maaya Sakamoto designs), a scarf/towel, and a letter set.  This special box does not, however, contain the album CD or the DVD.

Maaya Sakamoto: Maaya Sakamoto (坂本 真綾 , Sakamoto Maaya ) is a Japanese voice actress and singer.  She made her debut as a voice actress in 1992 as the voice of Chifuru in "Little Twins", but is better known as voice of Hitomi Kanzaki in "The Vision of Escaflowne".  Other major roles in anime include Riho Yamazaki in "", Moe Katsuragi in "Risky Safety", in "Tsubasa Reservoir Chronicle", Haruhi Fujioka in "Ouran High School Host Club", Sayaka Nakasugi in "Birdy the Mighty", Ciel Phantomhive in "Black Butler", Shinobu Oshino in "Monogatari", Shiki Ryōgi in the "Kara no Kyōkai" film series, and Motoko Kusanagi in "".  In video games she voices Aura and Natsume in ". hack", Lisa Hamilton / La Mariposa in "Dead or Alive", Aerith Gainsborough in "Kingdom Hearts", Aigis in "Persona 3", Lightning in the "Final Fantasy XIII" games, Ling Xiaoyu in the "Tekken" series, and Alisa Ilynichna Omela in "God Eater".

Ouran High School Host Club: Ouran High School Host Club (Japanese: 桜蘭高校ホスト部 , Hepburn: Ōran Kōkō Hosuto Kurabu ) is a manga series by Bisco Hatori, serialized in Hakusensha's "LaLa" magazine between the September 2002 and November 2010 issues.  The series follows Haruhi Fujioka, a scholarship student at Ouran High School, and the other members of the popular host club.  The romantic comedy focuses on the relationships within and outside the Club and satirizes the clichés and stereotypes that endure in shōjo manga.

Single Collection: Hotchpotch: Single Collection+ Hotchpotch (シングルコレクション+　ハチポチ , "Shingoru Korekushon+ Hachipochi" ) is the first compilation album released by Japanese singer Maaya Sakamoto.  The album was originally released in Japan by Victor Entertainment in 1999, this collection was also released in the United States market by Geneon Entertainment (USA) in 2005.  It was re-released in 2010 as a part of Maaya's Debut 15th anniversary reissue series.

Mameshiba (song): "Mameshiba" (マメシバ , Mameshiba ) is the ninth single by Japanese singer Maaya Sakamoto.  The lyrics for "Mameshiba" were written by Maaya Sakamoto herself while the lyrics for "Kuuki to Hoshi" were written by Yūho Iwasato.  The music was composed and arranged by Yoko Kanno.

Supporting paragraphs: Maaya Sakamoto Ouran High School Host Club
Answer: Haruhi Fujioka