guys what was that fantasy... the mc was this weak guy and everyone had like idk a pet? a ...

guys what was that fantasy... the mc was this weak guy and everyone had like idk a pet? a familiar?? but the mc had this tiny skeleton guy im pretty sure he evolved over the chapters after the mc got stronger but thats kinda all i remember, it was just one of those like solo leveling he was a loser and then he wasnt yk