The main consequence of switching to Easy Mode is Not Dying. Other than that, everything's the same, and you can still unlock the secret ending if you're masochistic enough. (I thought I was, but as it turns out, I'm not. Protip: never send Mercedes up against the world dragon. The flying doesn't help.)

You find out more about Oswald and Gwendolyn's first meeting and some interesting details about the bargain and Odin's family during Oswald's chapter. It doesn't really change it that much, it just adds a different perspective to it.

Also, there is much more lol Onyx. lol Onyx indeed. This makes me want to go and fix my shirtless Onyx icon, just so I can use it.

But it still doesn't compare to lol Ingway, whom you will be meeting very soon.