For a good part of this gallery I had to save things manually, using twitter advanced search, and I could've missed some things here and there, let's hope not, and I did a separeted gallery of his drawings that are more focused on Rikka and Akane from Gridman.

https://e-hentai.org/g/2739740/2bc8087fc1/

https://twitter.com/kengo1212

@ RepiL it can be really hard sometimes to keep track of all the stuff an artist makes especially on twitter, let alone saving them manually.
What you can do would be to have a rip app to download all images (like WTFDownloader) and then you do a manual cleanup by deleting unnecessary stuff. Twitter Media Downloader was a really great app for this purpose since you could also choose specific date for the rip to stop and it was the fastest compared to any other app.Not only that but it also made you instant zip files.
Unfortunately it was deleted from all stores. If you have any other suggestions you might let me know as well! ;-)

Base +6, Alcrian +6, nerodrago12 +2