Don't make Tifa just tit-fuck, that's suck. Just give Tifa the same Pussy-Fuck as well, that's also for 2B. Give 2B the same sex position like others..
2B is not about Ass, Fetish or even Doggy, just like Eve from the Stellar Blade. That's also goes for Tifa as well, Tifa is not about Tits or Booba, but her Athleticism. Tifa's Tits was a minor Bonus for her Athleticism Martial Arts, not more. Just Advice, add more proportion positions for the Character, so it will not just one position for each Character, Ok?!