>>714220750
Both tekken movies (live action and anime movie)
In the live action movie they have a threesome with Kazuya
In the anime, they have a threesome with Lee and fight over him after the fact.
The Lee romantic subplot is subtly hinted at in the games but rather than the sisters fighting over him it's implied he paid them for a "special assignment".
That ASSignment... his dick.
That is also the "request" Lee hints at with Nina in their fight intro.