Artist: davirook
No longer active on pixiv account and seems to have deleted their twitter
"I have a troublesome illness, so I will enter the medical treatment period" From his twitter
Original tweets(July 8, 2021):
厄介な病気にかかってしまった為、療養期間に入ります。その為ツイッターはしばらく更新ストップさせていただきます(元より更新ほとんどないけど👀)