 Roselle learned his piloting skills for the sake of his sister, Bianca, because he promised his sister to take her on a space flight, unfortunately she died before he can deliver on his promise.However he overcomes his sadness and shows to everyone that he can deal with everything.Due to his superb piloting skills, he is selected to pilot the prototype mass-production Emblem Frame, "Holy Blood" which attacks with Photon Diver.