URLs

• https://www.pixiv.net/users/1963100
• https://www.pixiv.net/stacc/sakagami_umi
• https://twitter.com/sakagami_umi
• https://twitter.com/intent/user?user_id=111939824
• https://pawoo.net/@sakagami_umi
• https://sakagamiumi.fanbox.cc
• https://www.pixiv.net/fanbox/creator/1963100
• https://sketch.pixiv.net/@sakagami_umi
• https://www.dlsite.com/books/author/=/author_id/AJ013482
• https://www.dlsite.com/maniax/circle/profile/=/maker_id/RG39002.html
• https://www.dlsite.com/pro/fsr/=/keyword_creater/"坂上海"
• http://doujinshi.mugimugi.org/browse/author/84785/
• https://www.melonbooks.co.jp/circle/index.php?circle_id=11029
• https://www.melonbooks.co.jp/search/search.php?name=坂上海&text_type=author
• https://ec.toranoana.jp/tora_r/ec/cot/circle/2UPAe36P8X7LdB6Td687/all/
• https://www.dmm.co.jp/mono/book/-/list/=/article=author/id=239729/
• http://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/creater.php?creater=14502
• http://twitgoo.com/u/sakagami_umi
• http://p.twipple.jp/user/sakagami_umi
• http://twitpic.com/photos/sakagami_umi