The author just can't decide whether he wants Rubia in the story or not..
The author tried many companions with the mc but it seems Isaac might be the one that would stay.
Skeleton would either die again and return back just to kill Isaac earlier than intended, or he'd kill Isaac now and attempt self-destruction. Damn, this chapter sucked hard. 😔
Dangit. Skelly gets all the pain and loss of ReZero, but the suffering is transferred to the reader. And so far the happy bits aren't really happy; it's just moments of not-suffering.
But with 136 chapters so far and MC still hasn't killed a dragon, a god or a legendary figure by himself. Impressive self-restraint on the author's end.