URLs

• https://www.pixiv.net/users/432041
• https://www.pixiv.net/stacc/youkantarou
• https://twitter.com/youkan1013
• https://twitter.com/youkan_asuka
• https://twitter.com/intent/user?user_id=2435017765
• https://twitter.com/intent/user?user_id=4562332286
• https://sketch.pixiv.net/@youkantarou
• http://asukatakayama.com
• http://www.asukatakayama.com
• http://store.line.me/stickershop/author/3676/
• https://twitter.com/asuka_youkan
• http://twitpic.com/photos/asuka_youkan