>>4078646I'm not sure if it was square or enix.. but I think one of these also started out like that.
Actually looking it up, it looks like Enix had some of that at least.
Heaven Burns Red (a rather well earning gacha) is also from a brand that had adult VNs in the past.
Plenty of well known voice actors started in the adult industry. Some artists as well. (i.e. Haruhi's)
Welcome to Japan. I think times are starting to catch up with them though. The whole adult game -> non adult anime thing has pretty much died nowadays, while anyone with a bit success immediately tries to leave it, and often dies trying.