[Crossover] Being the Ice Pillar's Adopted Heir Is Really Hard

Jiu Zhi Song Lile died in the final battle against Muzan in the Infinity Castle, closing her eyes in the arms of the master she loved. She thought that was the end. But when she opened her eyes again, she found herself back in an age overrun by demons, and This wasn't the world she had come from. In this world, there was no one named Jiu Zhi Song Lile. With no choice but to keep slashing demons in this new world, Jiu Zhi Song was picked up by the Demon Slayer Corps, just as she had been before. The new recruits of the Demon Slayer Corps gathered together for a late-night chat about everyday life “I keep hearing Jiu Zhi Song talk about her master. Who exactly is her master?” “Agatsuma, watch your tone. My master may be extremely flirtatious and completely inconsiderate of others, and may be even more annoying than Mr. Tomioka, but when discussing a Hashira, especially my master, the Ice Hashira, you must show the proper respect.” “Shouldn't you be watching your own tone when you talk about your master like that? And I've never heard of an Ice Hashira!” “The Ice Hashira is the Ice Hashira. Those of you with such shallow experience aren't worthy of knowing my master's real name.” “I get it! Lile is so strong, so her master must be really amazing too! And her master must care about her a lot to have taught her all those skills!” “Tanjiro, you really do have the best eye for people! I'm still nowhere near as good as my master... Heh heh, I'll tell you his name, Tanjiro. My master's name is Douma. He's the only Hashira in the Demon Slayer Corps ever to defeat an Upper Rank demon all by himself!” The room fell into deathly silence. [Reading Guide] 1. The heroine comes from a heavily altered parallel world of Demon Slayer (HEAVILY! ALTERED! BE WARNED!) 2. The male lead is not Upper Rank Two Douma, but Douma, the Ice Hashira. 3. The heroine is both her master's biggest fan and a hater. 4. OOC warning. If it's not for you, click the X. Happiness for you and me. Theme: So much swooning