Demon Slayer: God-Level Choice, Starting with Breath of Ice

Su Zhe travels through the world of Demon Slayer and unlocks the god-level selection system. They happened to meet Tanjiro and Nezuko who had just turned into a ghost. "Choose one. Take Tanjiro and Nezuko home. Reward: Ice and Snow Zanpakutō." "Option 2, kill Tanjiro and Nezuko, reward: Breath of the Sun." "Choice three, ignore Tanjiro and Nezuko, reward: Solar Physique." … With the help of the system, rewards such as transparent worlds and patterns will follow one after another. Hei Shimo: "I see the shadow of Yuanyi in him." Child Demon: "He can actually ignore my vampire skills." Yiwozuo: "His strength exceeds that of ordinary ghost hunters." By the time everyone reacted, Su Zhe had reached a god-like height. (This story is purely fictitious. Any similarity is purely coincidental, please treat it rationally.)