After Completing Genocide, I Unlocked The Game System?!

After a series of tragic events, I became struck with grief and decided to hit the "delete" button on myself. However, after hitting my head and recovering my past life's memories, I realised I was in the world of Undertale! "Fuck! My girlfriend who died was a psychopath!" Still, I'm into that shit! Thus, I did what any sane person would—commit mass genocide on monsterkind to revive my girlfriend! ------ Chara: "I'll kill everyone for you!" Frisk: "Only I can have you!" Mita: "I'll gouge out every women's eyes if they even glance at your direction!" Raiden Ei: "I won't let you go ever again!" Monika, Sakuya, Cynthia, Artoria Pendragon, Ada Wong, even the fucking fire keeper from Dark Souls! Villainous, deranged, crazy or sane... They're all mine!