MATSUDA98

She was classmates with Aoki Ume, creator of Hidamari Sketch.

Circles:
MATSUDA STYLE
Matsuda Fuumi (松田風味)
Umematsu (梅松)

Also goes by the name of Matsuda Yuusuke (マツダユウスケ)

Links:
Twitter
Pixiv
Fanbox
Fanita
Skeb