URLs

• https://www.pixiv.net/users/12539809
• https://www.pixiv.net/stacc/pentaerythritol-pentanitrate-is
• https://twitter.com/pentaerythrit0l
• https://twitter.com/intent/user?user_id=1047701781273300992
• https://pawoo.net/@pentaerythritol
• https://www.instagram.com/pentaerythritoltetranitrate/