The narration implies Kris has seen and used save points before, but their save is at 0:00 and nowhere, so I guess independently of what someone has done with saves at a previous time, now the point of reference is this adventure so time is at zero since the day started. Or maybe I just overthinking these mechanics too much.
Still, we didn’t see a single save point in the surface, so where has Kris used these before? Have they been in the Dark World before? Since they never talk or express much, it’s hard to tell if they recognized something in the situation or not.
Plot Designing 