Before you read this

A little dare wouldn't hurt, right? RIGHT? Wrong. One little dare caused everything to go downhill, everything happened like a landslide. Tsukasa wasn't about to give up here though, he's trying his best to piece everything back together. Everyone is trying to help, trying to somehow help Tsukasa reach Rui again.
This is a sequel to 'To be how it used to be', you don't have to read it, but some things would make sense if you did