https://www.pixiv.net/users/52031486
https://www.pixiv.net/stacc/niichi_art
https://twitter.com/niichi_adpt
https://twitter.com/niichi_draw
https://twitter.com/intent/user?user_id=1498238814850285569
https://twitter.com/intent/user?user_id=1548216358588268544
https://medibang.com/author/24322002/
https://medibang.com/u/niichi/
https://skima.jp/profile?id=99388
https://tsunagu.cloud/users/niichi_tsunagu