JAV is like a monkey's paw situation for me.
It caters to the largest variety of fetishes I've ever seen. Doesn't matter what you're into, you can find JAV of it.
But the Japanese elements of it all (the squeaking, the rapiness and the censorship) really ruin a lot of it
From what I've seen it seems like the reception is less mixed than with Tekken 7 and SFV at least. I've seen some weird looking models but for the most part what I've seen looked alright.
The graphics patch really helped things. The game still isn't on the level of SFV or Tekken 7 in terms of visuals but it's got a massive fucking roster, is well balanced and very fun to play if you enjoy KoF. They've stayed true to what makes the franchise great. Plus it has Vanessa, the greatest female character in a 2D fighting game and she's a MILF so who doesn't love that.
Be warned that the online isn't so amazing. The matchmaking can be wonky so unless you know people who play the game and can play with them online, finding people online might be a challenge. EDIT: But you mentioned online isn't even an issue here so oh well. Make sure to get all the DLC characters for KoF XIV.
And while I get that SFV isn't really a good game for offline play/clowning around, I would like to offer three alternatives.
Tekken 7 (which you seem to be discrediting for some reason),
Dead or Alive 5 and
Guilty Gear Xrd Rev 2.
The thing about
Tekken 7 is that it is actually surprisingly good if it's just people clowning around offline, picking the characters they think look coolest and doing shit. It's really straightforward, the game looks great and the gameplay is REALLY fun with a lot of characters. Definitely worth it for offline "casual play".
DoA5 is another one. Has similar characteristics with T7 in that it's great for offline play. There's even a F2P version you can download to check it out in case you're on the fence. Game also has a ton of customization options since you clearly don't mind female sexuality. Also has male options as well, and a very well rounded cast with a surprising amount of depth and personality to them.
Lastly,
Guilty Gear Xrd Rev 2 is a REALLY great game. It looks F-A-N-T-A-S-T-I-C and plays very well. It might be tough to learn but if you just enable the "easy execution" mode (or whatever it's called) and just pick characters you can really have fun. The game is anime so it has a ton of movement options and the characters all have a TON of personality.
You can't go wrong with any of thous four options. Btw stop calling it a beat em'up, you Euro. It's "fighting game".