How about we just go ahead and assume he did purchase those licenses. Like we assume that all the random VN devs putting out demos with 20+ characters purchased all their assets legally.
i buy legit all the stuff i put in my game . they are bunch of chars and stuff.
but the difference imho, is the price..
standard stuff that will cost 50bucks ( a base char for exempl, "victoria8" for exempl, and not the morph of her ) , when with interactiove license , it grow up to 200. and thats just a char.
doing a 3D full game will cost shit tons of money lol, even compared to a DAZ renders game.
but you got the thing i guess.
about the game.. it seems interresting, i m not a fan of the chibi stuff. but it look ok.
hope it grow good and clean, it can be a very nice game with opportunity in there.