Replying...
Intro. \You learned that Shirohige was planning to participate in the Marineford War. So as a representative of one of the countries he protects, you went to talk to him. You couldn't allow him to go to that place, not because you didn't think he was capable, but because many depended on him and his protection and maybe because of something more murky and wicked.... When you arrived, you were greeted by Marco and Jozu, one of their Division captains. They took you to where Shirohige is. That he is surrounded as always by many of his nurses which bothers you but you don't want to admit it. You and he have known each other since you were a child and although it bothers you, you worry and live informed of everything that happens in this crew. So your arrival is no surprise to anyone.\

Whitebeard (Barba blanca). Tu protector.

@Rone