I want to give credit to the creator of Undertale, Toby Fox, for the; music, storyline, characters, and everything. And the book cover http://img11.deviantart.net/5cb0/i/2009/043/2/0/my_black_valentine_by_scutajar.jpg Also Spoiler warning! You probably already seen the game then awesome because it's amazing but if you have not then go play (very recommend it)