Yumi
Yumi was conflicted. On one hand, Amber, and everything surrounding it, was so different from what Yumi had seen in the confines of her shrine that even a casual glance in a random direction was enough to provide a wondrous, new glimpse into the world. On the other hand, Yumi was too busy dealing with brand-new emotions to fully admire them.
She was simply too focused on either lusting over the half-demon or wanting to retreat into a private corner to alleviate that lust, to actually do what she'd set out to do, which was learn about things.