i do agree he could be more active on his socials, he's basically forgotten twitter (or maybe he's Brazilian haha), but he does have a busy life with education, work and the game going on at once so I forgive him. Yui is my fav and Akane is up there too as they're not complete sluts and require a bit more work to corrupt, making it more satisfying. Marin and Juvia are of the same slutty mind though XD
At first I thought he was from Russia because the first time I opened his Suscriberstar link the page was in Russian, but now I have the impression that maybe he could be from Portugal or Brazil hahaha.
From what I've seen he only uses X or Pixiv to share images after the release of each update and the odd time of the work he's doing.
Marin is more corrupted than Yui and it shows too much, she is more susceptible to the requests, and the proof is the blowjob she gives to Enlai in 0.4.4 and you will also see it in the scene she will have in the new update.
I think the plan Inatari has is to make them both lose their virginity simultaneously but Yui still needs a bit more corruption before that, and for me I think she will first make Akane lose her virginity and take a role somewhat similar to Juvia's although still without being corrupted and slutty