URLs

• https://www.pixiv.net/users/183180
• https://www.pixiv.net/stacc/nqg15661
• https://twitter.com/vector_space
• https://twitter.com/intent/user?user_id=112677995
• https://sketch.pixiv.net/@nqg15661
• http://vectorspace.seesaa.net
• http://twitpic.com/photos/vector_space