Circle account, they commission artists to draw illustrations for their products. The artists are usually listed in the post's commentary. Please try to be careful and tag the original artists of the images.
https://www.pixiv.net/users/2029526
https://www.pixiv.net/stacc/tamanotsuyu
https://twitter.com/cabinmild_007
https://twitter.com/tamanotsuyuinfo
https://twitter.com/intent/user?user_id=183593423
https://twitter.com/intent/user?user_id=947484411368415234
https://pawoo.net/@tamanotsuyu
https://sketch.pixiv.net/@tamanotsuyu
http://blog.livedoor.jp/tamanotsuyu/
