URLs

• https://www.pixiv.net/users/4558267
• https://www.pixiv.net/stacc/heleif
• https://twitter.com/cotta__k
• https://twitter.com/intent/user?user_id=4821194352
• https://www.artstation.com/cotta
• https://sketch.pixiv.net/@heleif
• https://bsky.app/profile/cotta-k.bsky.social
• https://bsky.app/profile/did:plc:ldlzcxrwvm4qplxbfyqxtrhr
• https://blog.naver.com/heleif
• https://sinalium.net/instructors/37