This might be a weird question, but I always wondered about Sacred Stones. Eirika and Ephraim, both of them throughout the story search for Sacred Stones. Twice their paths resulted in them reuniting. Together on the field they were unstoppable. But, I feel like in level 20 when Riev comes into play in Rausten, he should of taken the opposite twin of your choosing. Ex. Eirika story, you face Ephraim
Ephraim story you face Eirika.
I thought about this after playing Shadows of Valentia, since Sacred Stones and SOV, are a lot alike.
The twins thoughout the game find strength in each other. But, like SOV would it be like for them to fight amongst themselves.