Hello. You have an interesting AU on yandere shuichi and kaede. What if they were faced with their lucky versions from a parallel universe? I think Shuichi would have been depressed for a while because he couldn't give the same happiness to his beloved. Kaede would just be disappointed in him and in her life once again, while she would be very pleased to meet a happy version of herself. I think this would partially restore the former positive Kaede.
The non-victim Kaede would be in such shock that any version of her sweet Shuichi could be capable of such horrific and cruel things. Victim Kaede would be so happy to see a version of herself living her best life, and kinda excited to meet a non-yandere Shuichi. He'd be everything she remembered liking (and falling for) about Shuichi but none of it would've been a lie or manipulation.
Yandere Shuichi would be overjoyed to see himself and Kaede in such a happy, loving relationship, if a little jealous. Why did his parallel self get to have such a loving partner? Not that he'd trade HIS Kaede for anything; he just wished she was happier. Non-yandere Shuichi would be disgusted with himself for being capable of hurting ANYONE like that let alone Kaede.
