Really big trigger warning here! There are many descriptions of gore and blood, and if your uncomfortable with that, please do Not read! Also, this isn't dusttale, nor is it Last Breath sans,It's a completely different au where Gaster tries to inject sans with something to make him stronger, and well, you'll find out ;) This au does not belong to me! Credit to the original creators. These characters do not belong to me either! Credit to Toby Fox.