Yui was one of my favorite characters till the day she hooked up with Nakago. Honestly, would you beleave your best friend who has never betrayed you in the 10 years she has known you or some guy who saved your life who has never meet your friend. Yui is a strong character who through tragety, fear and careful manipulation was reduced to a puppet. Sad but true. I like her so much better in the OVA's