Other fun differences the world of Konosuba has to our world:<br/><br/>Mackerel (but not necessarily other types of fish) grow in the ground.<br/>Watermelons swim freely in the ocean.<br/>Those cabbages that manage to escape the harvest engage in a yearly Great Cabbage Migration (this is a highly profitable event for the adventurers in Axel).<br/>Mysterious creatures called Neroids exist that are never given a direct description in the novels. They vary greatly in size, from being small enough to be kept as household pets to being large enough to be raised on farms, and the farm-raised ones are milked for secretions that are also called Neroid, that are naturally fizzy and carbonated. Liquid Neroid is a popular additive for drinks, most often being mixed in with fruit juice or alcohol.<br/><br/>Those are pretty much the most noteworthy things I can think of that are likely to catch reincarnated individuals by surprise.