Huh? What? Can anyone remind me again of the plot? Is that god angry on MC or something? also Why angery???
Rather than angry, feels more like God of that World forcefully reincarnated MC to that world with the Carrier Job while also giving him lotsof Mans, as a means to entertain itself (since that class isn't combat oriented, so the high amount of mana is practically wasted).
He inserted the Carrier girl into the mix because MC still had the leyway to defeat that guy & monster as well as save the girls.
Basically it feels like the God is the type who likes to play with the lives of people as a form of self entertainment and as a form of testing people.