The from One-and-Done TG man himself, Kaneko Naoya, twitter's page: https://twitter.com/nahoyan/
Cherry picked from August 2017 to the time of this upload (Jan 31 2019) Consisting mostly of: *One-shot TG pages *Two-Shot TG pages *Samples from his doujin *Random art/fanart
Luckily it's pretty simple to get the original size as long as you have the original file name since the URL for image from Twitter is nothing more than "pbs.twimg.com/media/" and then whatever the file name is + file extension, and then stick ":orig" on the end after the extension to get the original full size (albeit still ran through Twitter's JPEG compression).