E.g. a 'miss' mechanic that makes higher levelled players practically invincible, yet doesn't apply to mobs so MC can spend half a day tickling a boss to death, clearing dungeons is more like solving a high-stakes riddle than actual PvE action, and there's some hidden "luck" stat that affects the game way too much.
just about anyone could exploit a bug that was previously well-known, give away the secrets to clearing bosses, or choose the most efficient quests.
The couple doesn't have the 'loving' type of snu-snu, it seems like the ML mostly does it to fulfil his s*xual desires. In fact, he sometimes does it without FL's consent or against her wishes, which some readers considered r*pe