Unique character combos?

So special dialogue interactions between characters are one thing. But I was playing with both Mari and when they were both down to their underwear they did this special pose together.

I had never seen anything like this before and this isn’t even my first time playing with both characters at the same time, I think it didn’t happen before because they both weren’t at the same level of undress yet?

Anyway are there other special combos like this?