Demon Slayer: The Big Sister Is Clearly Strong, Yet All She Wants Is to Slack Off

[Everyone's favorite. Big-sister type. Girls' love is in full bloom. No angst. Strong female lead.] Ling Xue, an anime fan, transmigrates into the world of Demon Slayer and is adopted from the start by Yoriichi's family. Yoriichi teaches her Breathing Styles, while Michikatsu teaches her the family's swordsmanship. Over time, Ling Xue becomes a swordswoman as powerful as Yoriichi. But her good fortune doesn't last. Born from the start in the beginner's village, she runs into the final boss. Muzan's appearance plunges her into despair. She fights with all her might and cuts off one of his arms, but Muzan forcibly injects her with his blood, turning her into an immortal who will never age... Ling Xue originally planned to walk the path of demon slaying alone, but after Michikatsu's betrayal and Yoriichi's expulsion from the Demon Slayer Corps, Yoriichi eventually dies of old age. That makes Ling Xue resolve to stay with the Corps... Many years later, every Hashira in the Demon Slayer Corps has trained under her. As their teacher, her true strength is unfathomable. She can defeat the Upper Ranks and beat up Muzan without breaking a sweat, making her the Corps' final trump card... “What? You got beaten up by an Upper Rank? Is that what I taught you? Go run ten kilometers first!” “Hey, Head Pillar, how did you get hurt fighting a Lower Rank? You're hopeless. Go swing your sword a hundred thousand times!” “Hmm, girls really are the cutest. Come on, I'll treat you all to a bath!” Everyone knows how strong Ling Xue is, but gradually, something starts to seem off. “Um, why do you know Thunder Breathing?” “And how do you know Water Breathing?” “Oh no, she's learned Insect Breathing too!” [After the master devours a demon, the corresponding Blood Demon Art is obtained...] (The blurb doesn't do the story justice. Please check out the main text. Thanks for reading! (●'◡'●))