>>44462782https://www.pixiv.net/en/artworks/49275811Here is the direct source provided by the artist's Pixiv account which includes all of the provided images and then some, dated to early 2015, and no I don't know if they have a Twitter; I couldn't find one linked on said account or their Pawoo. As a heads up, all of their newest content spanning from a few years back consists primarily of fanart romanticizing early 20th century American film actors and aesthetics, Cuphead, harsh, violent imagery with grotesque designs and cute animals, with zero hint of Pokemon relevance.
Amongst their earlier works however are several Pokemon realism pieces and a large 50+ image collage of random drawings which mostly feature Dark-types, Water-types and a few OC trainers and gijinkas, all drawn with scattered levels of generally high quality. Maybe if somebody else recognizes this style, they'll recognize alternate upload sites, but for the time being, this is all I can do.