URLs

• https://www.pixiv.net/users/16143607
• https://www.pixiv.net/stacc/y_kotetsu
• https://twitter.com/y_tetsurou
• https://twitter.com/yamauchi_tetsu6
• https://twitter.com/intent/user?user_id=3669112820
• https://twitter.com/intent/user?user_id=1171459132144021504
• https://pawoo.net/@y_tetsurou
• https://pawoo.net/web/accounts/174262
• https://sketch.pixiv.net/@y_kotetsu
• http://yamauchi-tetsurou.com
• https://www.pixiv.net/stacc/y_tetsurou
• https://twitter.com/roll_de_fox