[Self-defense is better practiced when you don't have to wake up with bruises, which is why Arthur and Ariadne are here. The dojo they're standing in is reminiscent of a handful of buildings in which Arthur had spent time in as a youth. It is traditionally Asian room, tatami-matted, details in wood, sliding shoji doors opening to a sprawl of green grass and low, wide trees. Modern gyms--the type institutionalized by high schools and government buildings everywhere--with their drab laminate floors, cement walls and sweat-soaked mats are not, and would never be, Arthur's idea of a dream.
Besides, Arthur enjoys getting to put Ariadne in the soft white gi most suitable to these particular environs.]