Where have these composers gone? (The MIA thread)

[Jormungand]

So, I've been wondering what's happened to composers who either dabbled in VGM for a short time never to be seen again, or composers that were relatively active up until retirement/career change/personal reasons/whatever.

This thread is for those composers, and the reasons for their disappearance! Anyone who has any information to contribute is encouraged to post.

If anyone has any additions they'd like to make, please feel free. I would say it's reasonable to add any composer that has been inactive in the VGM field for more than three years. That number is based on my concept of game development cycles, where a composer who seems inactive may very well be actively scoring a game that is either unannounced or announced but without its designers fully disclosed.
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Yumiko Kanki (F-Zero)
Last known game work: F-Zero (1990)

Masahiko Yoshimura (Shining Force, Shining in the Darkness)
Last known game work: Shining Force (1992)

Norihiko Yamanuki (The 7th Saga)
Last known game work: The 7th Saga (1993)

Yayoi Wachi (Magic Knight Rayearth, Panzer Dragoon Zwei)
Last known game work: Panzer Dragoon Zwei (1996)

Toshiyuki Sasagawa (Tengai Makyou Zero)
Last known work: Ten Plants 2 (1999)
Last known game work: Tengai Makyou The Apocalypse IV (1997)

Motoaki Takenouchi (Shining Force II, Shining Force CD, GunGriffon)
Last known game work: GunGriffon (1998)

Yasuhiro Kawakami (Final Fantasy: Mystic Quest, Tobal No.1, Chocobo's Dungeon 2)
Last known game work: Chocobo's Dungeon 2 (1998)

Mitsuhito Tanaka (Treasure Hunter G)
Last known game work: Baroque (1998) - as arranger

Hiroshi Tamawari (Vandal Hearts I & II, Azure Dreams, Suikoden)
Last known game work: Vandal Hearts II (1999)
Official site: http://www.eurus.dti.ne.jp/~tama/

Yasuhiro Kawasaki (Illusion of Gaia)
Last known game work: Super Producers (1999)

Masanori Hikichi (Terranigma, Granstream Saga)
Last known game work: Oprhen: Scion of Sorcery (2000)

Hiroyuki Masuno (Drakkhen, Top Gear)
Last known game work: Arle no Bouken: Mahou no Jewel (2000)

Yasunori Shiono (Lufia I & II, Energy Breaker)
Last known game work: CIMA: The Enemy (2003)

Noboru Iwata (Langrisser III)
Last known game work: Erde ~Under the Juniper Tree~ (2003)

Junko Shiratsu (Panzer Dragoon Zwei, Hundred Swords, Onimusha Buraiden)
Last known game work: Sega Rally 2006 (2006)


Partially solved mysteries:

Mari Yamaguchi (Breath of Fire, Super Ghosts 'n' Ghouls, Disney's Magical Quest series)
Last known work: Rockman 10 Image Soundtrack (2010) - as arranger
Last known game work: Mega Man 10 (2010)
*Mari Yamaguchi's last known game work before MM10 was Mickey to Donald Magical Adventure 3 in 1995; in other words, she is assumed to be officially retired from the VGM industry. I wonder if she still is an active composer otherwise?

Noriko Matsueda (Front Mission 1 & 2, Bahamut Lagoon, Final Fantasy X-2)
Last known work: Final Fantasy X-2 Piano Collection (2004) - as arranger
Last known game work: Final Fantasy X-2 International + Last Mission (2004)
From SEMO:

Matsueda subsequently worked on 2004's acclaimed Final Fantasy X-2 International + Last Mission and her three arrangements of the Final Fantasy X-2 Piano Collection. Written with the intention of leaving a legacy, Matsueda decided to leave the gaming industry immediately afterwards to the distress of her friends Shimomura and Eguchi. Her intensive job brought sleeplessness, loss of appetite, sharp weight decreases, and rough skin and Matsueda found this increasingly affected her with age; the reception towards Final Fantasy X-2 was the last straw. She currently resides in Japan living a relatively quiet life, but continues to listen to and play music as a hobby and actively follows her former colleague's careers.

I wonder if she would find freelancing less stressful?