Artist, illustrator. Good at drawing girls, mecha and bydo.
Japanese name: 岩間 芯 (Iwama Shin) or Iwamachine
The other name: ましー (Masy)
Site name: 灰色ネジ
https://www.pixiv.net/users/12942
https://www.pixiv.net/stacc/mashc
https://twitter.com/iwamachine
https://twitter.com/iwamasy
https://twitter.com/intent/user?user_id=29115731
https://twitter.com/intent/user?user_id=1203397693
https://sketch.pixiv.net/@mashc
https://www.tinami.com/creator/profile/9316
http://privatter.net/u/iwamasy
https://www.stickam.jp/profile/iwama
http://www.ustream.tv/channel/iwamachine
http://www.ustream.tv/user/iwamachine
http://p.twipple.jp/user/iwamasy
http://twitpic.com/photos/iwamasy
http://yfrog.com/user/iwamasy/photos