URLs

• https://www.pixiv.net/users/2846687
• https://www.pixiv.net/stacc/kaidukakaiduka
• https://twitter.com/kaikaikaiduka
• https://twitter.com/intent/user?user_id=332877808
• https://seiga.nicovideo.jp/user/illust/18482197
• https://www.nicovideo.jp/user/18482197
• https://sketch.pixiv.net/@kaidukakaiduka
• http://blog.livedoor.jp/kaikaikaiduka/
• https://ja.wikipedia.org/wiki/かいづか
• https://book.dmm.co.jp/list/?author=243942