Monster Three-Color Eyes

A modern female killer was betrayed by her adoptive father, adoptive mother and former partners. She traveled to another world with a game skill ~ Devour, and this began her journey to another world. What changes have occurred in the other world due to her arrival? Has the previous peace undergone major changes because of him being the fuse? The heroine's personality has changed. She acts uninhibitedly and does whatever she wants. She is indifferent and doesn't understand what love is. She is an idiot when it comes to love. The hero and the supporting actor are in tears~ The heroine is very strong, with magic and martial skills, a full range of mage, and is best at dark magic and assassination.