Artist.
Name: しび。 (Shibi) or アサギ鼠 (Asagi Nezumi)
https://www.pixiv.net/users/28685328
https://www.pixiv.net/stacc/745rn
https://twitter.com/shibimaru1902
https://twitter.com/intent/user?user_id=1359928467794526208
https://peing.net/ja/shibimaru1902
https://www.pixiv.net/users/41894556
https://www.pixiv.net/stacc/shibi1902
https://twitter.com/asagines
https://twitter.com/intent/user?user_id=1145885689998741506
