As a result of a different world transfer, I became a classmate with my mother~

Or author's serving time for most of the genres in this book.
It's cool but not for the faint of heart

Very out of context, his food supplies got sabotaged by his hostile entourage, his 2000 enemies were primitive, no tactics, no weapons, no armour, etc, he also had a an Magic item which made enemies intimidated and easy to lose morale and flee(he killed their leader in a decapitation strike with cavalry so that was a big blow to morale) he also had a voucher for 3 volley of 500 arrows from Tier-5 Archers so that killed 3/4 of the enemy in an instant. The systems purpose to is to literally follow cause and effect, mc is in danger from enemies? Make a quest, mc is in danger of bankruptcy? Make a quest, I don’t know what else you expect. Selling salt was important because relying on the system isn’t sustainable, he went personally because the ‘agent’ was someone he knew and could get better conditions in a contract

"gourmet world of another world" and "sign in buddha's palm" are 2 which could be similar but the latter got discontinued

great book