I haven't read the novel and I'm not sure if there's even a novel but the MC has an iron clad will as shown on ch.10 so remember when it was mentioned that the ML said something abt harming the MC's family or something, and what if the MC discovers it later on. Like I think we're heading to a very dark route where the MC will take revenge to the ML...
Hopefully we won't end up with a broken MC.
This rock/lava man will be someone's 'hear me out' for sure -- besides his faceless head he got all the equipment and capacity to be your baby daddy.