As far as translated chapters shows, the world is pretty fleshed out. In-game politics has clear effect both from NPCs and players. The unique eggs give lots of possible interactions (the kid with a succubus is awesome!) much like how HxH had cool nen powers.
The MC is a typical knight, but may turn to a darker power while still being kind (total assumption from the cover) so he's pretty played out as a character but still interesting. His OP brother (it's not that hard to guess his OP-ness) is going for a kinda cool kinda cuddly style which sorta works by giving his character a starting layout without wasting too much words.