My investigation led me to find it was posted on twitter and the tweet is now removed http://web.archive.org/web/20190930061251/https://twitter.com/Kemmahi/status/1178552885795180550

The artist seem to have changed the handle of their twitter account. It’s now https://twitter.com/Kemmuono/

Here’s Telegram channel where their art is still there (and link to the art) https://t.me/kemmyarts/123