Just watched EPISODE 6 have some questions?

So first of all why is this anime so fast paced and it seemed to me like it straight up skipped some character introductions or arcs just like in this ep related to the yellow girl . Also what is magoi and what are these jinns?

Also is a magi a child of Solomon or his reincarnation and as such are they siblings.

Also why is this world so cruel? With the magis and whatever don't they want peace

Btw Rip BaBa she the goat