Hmm, what could possibly make Vanille rage this much? Perhaps Sorbet is in a damsel in distress moment and needs to be rescued. A small idea.
Maybe they found something valuable during their adventures and some group wants it to themselves. I guess the negotiations ends when Vanille equips every possible weapon she can carry and puts some war painting.

What inspired me to draw this was a game I have been playing, a game that revolves around a Samurai and an island that deals with a Mongol invasion. I really like how the swords and the bow are equipped.
Also, Damsel in distress moments and rescue scenes are something I like in stories, if done well. Though it might bit cliché, but those scenes will always be my favorite. :3