My Fiancée Is One of Five Identical Sisters

Xiao Luo was sent down the mountain by his master to find his fiancée!

But, Master, why didn't you tell me my fiancée was actually one of five identical sisters?

And that I'd become a live-in son-in-law and start living a shamelessly carefree life?

(A lighthearted, sweet story with a little danger and excitement. Angst doesn't exist here. It's sweet from beginning to end.)