I agree it looks like AI. Above aside, it's missing the mole, the pupils are misshapen and her breasts are too large. The skin is too "clean", the buttons have seemingly random patterns on them and the top button of the shirt instead has two empty button holes on each side.
Individually this isn't any sort of proof, but together it raises some suspicion.
I'm surprised to see that this is the first post on this site linking the two dudes. Same voice actor, but completely different attitudes toward their respective Sakuras.
After reading some of Tsuruse's tweets from March, I would not expect any new updates for this story for a while. He's now mainly working on his new project for the time being, claiming it will be more focused and thematically consistent than Sakura no Sekai (which started as a lighthearted slice-of-life yuri series, believe it or not).
The pool's fully translated now at least, so if you want to binge or catch up, now's your chance.
