Latina, thank you for your message and your questions that I'll try to reply to.
I think my big thrill is to see Mariko being taken by other men - or to hear her as this is a real imagination stimulator. Seeing someone else moving in and out of my partner and reaching a climax in her is a real turn on for me - with her 'willing' or 'unwilling'. It isn't the only thing but is my favourite because of its mix of power and submission.
A few times Mariko has had sex with women both to fulfill her own curiosity and because we both thought it a natural step in her sexuality (and mine). She has also, on a few occasions, wanted to give me a sensation of what she experiences - by using a strap-on. I think that this was a real need for her to show me her submission.
Sorry if I created impression we are in USA - we are living at present in Europe. The scene we get get involved with here is not quite the same as it was in Japan - I think because Japan has a big 'on the loose' expat community which does not really exist here.
Look forward to you comments and will try to keep on posting. WoA has also asked me if I can Mariko to give her thoughts