The only Nutaku game that doesn't reset a battle or map when you have crappy internet browser or service would be Kamihime
I don't think Aigis should be blame for it since it's an old game. Online Gacha games are pretty much iffy on the tech stuff. Have to use VPN, clear cache
Compared to console games, (well, the older ones that don't use internet) don't crash.
Edit:
So gonna miss dat. I can't tell which hole for some Hentai scenes is his dick going into. In Anna's case, I can't tell if her 2nd scene had penetration or she's just rubbing his dick with her clit. Since I can't read the Hentai dialogue in DMM,
Sometimes, they don't show blood for virgins. Oh well :P