This has been answered multiple times the first game had one optional NTR Bad Ending, clearly behind a warning. This game has no NTR planned.
Also, in terms of sheer volume, I’d be genuinely surprised if that prior bad ending even amounted to 1% of the total content.
If your standard is "I won’t play anything that contains even a single optional bad ending I dislike" then this probably isn’t for you and that’s fine.
I’m not going to argue about how you choose to filter your media.
What I am going to push back on is the implication that it was unavoidable or that the game "features NTR" as a core element, it doesn’t.
It’s like refusing to watch a soccer match because there’s a player you don’t like on the bench.
You can, quite literally, ignore and turn it off.