Demon Slayer: Swallowing Evil Ghosts Starts with Family Worshiping Heaven

[Time Travel] + [Single Female Protagonist] + [No Regrets] + [Counterattack] + [Never OOC] + [Decisive Killing] Traveling through Demon Slayer, Yuto Magaki's whole family was eaten by demons at the beginning. Until he personally made that ghost into his first midnight snack. Others kill ghosts, he eats ghosts. When Tanjiro was still weeping and saying "rest in peace" to the ghosts, he had already used the "Ghost Hunting Cooking Manual" to turn each evil ghost into his power. Wu Mei put him on the list of must-kills. Magaki Yuto puts Muzan on the top of his must-eat list. When the evil ghosts broke into his sight one by one, he just smiled lightly: "How will I eat you today?"