sister dies in the next mere minutes because she got ganged up by his very mean enemies which i dont have a name cause im lazy anyways he can see through time (but he can't change fate or anything, whatever happens, happens) for like a bit maybe a week or half to make it not op anyways since he has such a good bond with his sister he couldn't bear with the fact that she's gonna die like in a minute or so and he's forced to watch her gruesome death twice (from his cool time seeing vision and reality)
