Mysteries are not yet fully unveiled

although it seems Jun Mochizuki has already revealed what happened at the tragedy or sablier, I still don't think she is telling us the WHOLE TRUTH. There are still blind spots in the story, and I think the only way to reveal it is going back to the past itself. Remember how Glen (leo) is planning to gop back in time to kill Lacie so thatthe tragedy shouldn't have happened? I believe that is when all things shall be revealed.