Demon Slayer: Divine Choices, Starting with Ice Breathing

Su Zhe transmigrates to the world of Demon Slayer and unlocks a god-tier selection System. By chance, he runs into Tanjiro and Nezuko, who has just turned into a demon. “Choice one: Take Tanjiro and Nezuko home. Reward: an ice-type Zanpakuto.” “Choice two: Kill Tanjiro and Nezuko. Reward: Sun Breathing.” “Choice three: Ignore Tanjiro and Nezuko. Reward: a solar physique.” … With the System's help, rewards such as the Transparent World and the Demon Slayer Mark keep coming. Kokushibo: “I see Yoriichi's shadow in him.” Douma: “He can actually ignore my Blood Demon Art.” Akaza: “His strength surpasses that of an ordinary Demon Slayer.” By the time everyone realized what was happening, Su Zhe had already reached godlike heights. (This story is entirely fictional. Any resemblance is purely coincidental. Please take it with a grain of salt.)