/jp/ - Otaku Culture

>>12185524
I interpret it as meaning she can control the powers of other Touhous, as all Touhous and youkai exist or do battle through rather supernatural means and perplexing phenomenas.

That's why she can stay in front of Reimu/Marisa and their rain of bullets for most of her stage without taking damage or spilling her sake.
It makes sense for her, I think, being able to control the battle in order to extract the most fun out of the fight.
I interpret Yuugi as one who always fights on the same level as her opponents, so that she may enjoy the fight as opposed to the victory. So regardless of who she fights, she can manipulate rather strange phenomena to bring the best out of the fight, be the opponent stronger or weaker than her.