there is only one word i can use to describe this, garbage.
i re readed it after droping it a long time ago (around 4-5 years)
you can also resume the protagonist in one word : pushover.
the whole manga is just people using and ordering mc around , how can someone who was an adult before not stand up for himself ONCE ?
also, dont try to find any logic on power scale system here, they will say "yeah that thing is extremely pwerfull we cant defeat it for years with our top adventures/knights, mc defeats it easily, but the proceeds to take years to get to the level of those knights?
mc should just take his friends and wives then wipe out the entire existence because of how annoying those people are wtf.