URLs

• https://www.pixiv.net/users/63506680
• https://www.pixiv.net/stacc/the_blacksigma
• https://twitter.com/the_blackSIGMA
• https://twitter.com/intent/user?user_id=1346102366819520512
• https://www.deviantart.com/theblacksigma
• https://pawoo.net/@the_blacksigma
• https://www.patreon.com/theblacksigma
• https://www.patreon.com/user?u=77253529