URLs

• https://www.pixiv.net/users/1884603
• https://www.pixiv.net/stacc/koshikun
• https://twitter.com/S_iroha_info
• https://twitter.com/koshi_kun
• https://twitter.com/intent/user?user_id=132573346
• https://twitter.com/intent/user?user_id=1807650519688839168
• https://seiga.nicovideo.jp/user/illust/7230406
• https://dic.nicovideo.jp/u/7230406
• https://www.nicovideo.jp/user/7230406
• https://www.koshi-kun.com
• https://com.nicovideo.jp/community/co430491
• http://koshikun.blog.fc2.com
• http://p.twipple.jp/user/koshi_kun
• http://twitpic.com/photos/koshi_kun
• http://yfrog.com/user/koshi_kun/photos