Oh, well now that explains quite a lot about the time they've been apart. If her arrival on a scene would cause more harm than good then it's no small wonder why he hasn't called on her for help for so long.

"I have a purpose helping Blaze with her missions, so I will keep busy either way. I do not wish to have my presence do ill to you or your world. I...only wanted you to know that my skills are always there for you to call upon if you would need them. Even in another world, it's your soul I'm bound to. Also Blaze gave me a peculiar device to traverse dimensions without being summoned through my contract. It has proven quite useful."