https://www.pixiv.net/users/22947
https://www.pixiv.net/stacc/619285
https://twitter.com/kero_sawa
https://twitter.com/kero_sawa0529
https://twitter.com/intent/user?user_id=127727904
https://twitter.com/intent/user?user_id=1069182084911063040
https://sketch.pixiv.net/@619285
http://twitpic.com/photos/kero_sawa