I understand your feelings, but they both changed a lot, and are different people after so many years - did you notice that Kan meets Shuna approximately 5! Years after breaking up with Yumi? And i dont think yumi had the capacity to heal Kan.....
I am VERY courious how sensei will play this story...
True it does not seem like Ken will be able to let go of his attachement and guilt over Yumi so easly and trust himself. And we still havent seen if he will be able to controll himself if he gets pressured. i am so glad that shuuna is bigger and does not seem to be willing to take an abuse...its safer for them both that way. It could be very easy for kan to fall into this abuse pattern again and i think its what he fears the most. This way he probably wont have a chance.....as i see it shuun would probably just stop him?
Really, he is still sooooo messed up i would love to send him for real good therapy if it was real life. Just what sensei will use to heal him?
and Finally a prequel..Finally more of Kan-chan's story..i really wanted to see why Kan-chan lost his smile ..
and seeing him with Yumi again makes me want them to be together again !!!