"Just as expected, plans could never keep up with change. No one could remain hidden behind the scenes forever. Didn't the original Aizen end up crashing and burning too?" Shen Fei sighed softly at the thought.
Facing Aizen now was an extremely bad deal for Shen Fei. To be honest, he had never intended to kill Aizen from the start. Otherwise, he could have made his move in Hueco Mundo, when Aizen had yet to complete his Hogyoku evolution. Fighting him then would have been far easier than it was now, and he might even have obtained a Hogyoku.
Although Aizen was exceedingly dangerous, strictly speaking, he was also a revolutionary—someone who wanted to change the corrupt state of the Soul Society. There were quite a few people in the Soul Society who wanted to change the status quo, but unfortunately, none of them possessed Aizen's drive to act. Kisuke Urahara, Shunsui Kyoraku, Jushiro Ukitake, and the others might have wanted change, but they would not openly oppose Central 46.
More importantly, after meeting Aizen, an idea Shen Fei had entertained long ago resurfaced. As someone who constantly traveled through countless dimensional worlds, he needed companions too. Esdeath, Ada, and the others were fairly strong, but Shen Fei did not want them undertaking anything too dangerous. Someone like Aizen, on the other hand, would be perfect.
Of course, Shen Fei did not simply want to use Aizen as a pawn. With Aizen's strength and intelligence, it would be difficult for anyone to treat him as one anyway. More accurately, Shen Fei wanted a mutually beneficial partnership with him. Shen Fei would give Aizen the chance to break free of this world, while Aizen would form an alliance with him. In the past, even if he had entertained such thoughts, his