After beating jevil and talking to the shop keep he says the world has become darker, yet darker.
And just general game spoilers maybe end game spoilers if you want to consider it that.
Ralsei is Asriel anagrammed. GOD I FEEL LIKE A DIPSHIT
Wait until you realize Delta Rune is just an anagram for Undertale
Oh yeah I knew about that, the whole time after undertale was done people have said it could spell delta rune. The delta rune plays a big role in the first game. It starts the rumor of the hyper being I believe. ---