Musashimaru may be the most serious of the three, but he was certainly relaxed during our lunch. I asked him how he preferred I should refer to him, and he said "Fi" right away! Also, he brought along a friend from Hawaii named Eric (who everyone calls "Fats" even though he isn't really) who started in Sumo but had to quit for medical reasons, and Eric was a really nice guy too.
Since Lynn Matsuoka has known Musashimaru for many years, having her present undoubtedly contributed to the laid-back environment. Indeed, my impression is that everyone at the table including my Japanese colleagues (and also Musashimaru's manager who was there too) seemed to have a good time. I know that I did!
Kind of funny watching the other people in the restaurant pretend they didn't notice our group. I might get tired of that if I was a celebrity, but Musashimaru handled all the 'looks' very gracefully as well. He is a true Champion.