Accel00
...so that's why MC doesn't have knowledge of ToAru, huh? So doesn't just start reflecting everything? Well to be fair, he literally just got these powers - dude's still needs to explore his potential more.
Considering there is no tomura here who can nullify his power with plot armor, he will be really op. Please keep in mind his brain is faster or just as fast as a quantum computer so I can understand him not knowing his powers know but please don't nerf him in the future because of plot, There isn't much you can do against someone who controls vector.