RE the MC jumping: I think that the jumping attack might actually be an unconcious thing on his (or should it be her?) part, because he seemed utterly surprised when he did it the first time around. Something tells me that it's kind of reflexive at the moment; perhaps he inherited the muscle memory of the girl that used to own that body (if there's no stable time loop, then I'm fairly certain she's **not** a reincarnator, or else the entire group is pretending to not know her because they somehow knew it wasn't her in that body).