You Have a Nichirin Blade, but I Have a Seven Ice Axe

After transmigrating to the world of Demon Slayer, Luo Zhen awakens an Ultra lottery System. By sacrificing the Breathing Styles he has learned, he can randomly obtain the skills or transformation devices of Ultra Warriors. Completing the random missions issued by the System also earns him lottery draws. Agul's Ocean Sword, Leo's flying kick, Dyna's Miracle Type clone, the Strium Bracelet, and more. Stomping the Upper Moons and taking down the Demon King Muzan with one hand is simply too satisfying. On the Mugen Train, he drives off Akaza and Doma alone, saving Rengoku and Shinobu Kocho. Muzan senses Luo Zhen's terrifying potential and decides to eliminate him. He personally leads the Twelve Kizuki in surrounding Luo Zhen, even threatening him with the lives of everyone in the Entertainment District to force him to surrender. Faced with this, Luo Zhen calmly wipes the ring on his left ring finger, set with a Lion's Eye. "Sorry, I don't know them." Then he crosses his arms in front of his chest and strikes a punching pose. The red gem on the Lion's Eye ring on his left hand suddenly shines brilliantly. "Leo!" Also known as: Transmigrating Between Worlds, Starting with Demon Slayer