@SprinKah
I feel like Yuki needs him more but Yui deserves him more.
It seems like for the story to end happily he would have to pick Yuki since Yui is more well rounded and capable of moving on and finding someone else.
Realistically though picking the more pitiful person because the other is too reliable and capable is the worst logic ever for a relationship.
It would be Re:Zero all over again.