So in Season 2/3, Ulrich was not always best friends will Ulrich, having jealously with him other Yumi. In the Evolution trailer, he seems to be angry/enemies with William. Do you guys think they're fighting again, possibly other Yumi, or something else? I have a feeling it's them being enemies, as William did not look like he was possessed. Plus in Series 4, we did not see Ulrich and William together much after William was freed, so something may have happened.