Just wanted to know how to start earning progress towards my relationship with the twins. Am I just not doing something right or do I need to wait till more of the story comes out?
The game currently doesn't allow you to increase your affinity to the Twin; there will be around another 6 characters we can develop affinity for as the game progresses - stay tuned.
Affinity to the twins will be gained in the usual way, via duelling and participating in the mini game associated with them.
Hope you're enjoying the game so far :)