Artist. Formerly tagged as sasi and prgr rg.
Artist name: sasi, さし (sashi) or おsasi身 (Osashimi)
https://www.pixiv.net/users/18492
https://www.pixiv.net/users/2615365
https://www.pixiv.net/stacc/prgr_rg
https://www.pixiv.net/stacc/tsu-ruku
https://twitter.com/sasi_me
https://twitter.com/intent/user?user_id=42554348
https://pawoo.net/@sasi_me
https://pawoo.net/web/accounts/26032
https://sketch.pixiv.net/@prgr_rg
https://sketch.pixiv.net/@tsu-ruku
http://privatter.net/u/sasi_me
http://www.stickam.jp/profile/sasi_me
http://twpf.jp/sasi_me
http://twitpic.com/photos/sasi_me
http://yfrog.com/user/sasi_me/photos
