So basically he have to keep loving sunbae regardless of their past?

i think it could be the other way where uke needs to keep loving seme cause if i understood right, uke is having bad luck his whole life due to seme forcing them to be binded through the red string

So now we'll take a look back at their first lives to see if Uke falls in love with Seme despite the strings attached.

Will they also show whether Uke is looking for him, or if he'll be devastated that the flowers remained but he didn't?

Will we find out only next season?