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Kimetsu no Yaiba: Shiawase no Hana
Demon Slayer: Kimetsu no Yaiba - The Flower of Happiness
Kimetsu no Yaiba: Flower of Happiness (鬼き滅めつの刃やいば: しあわせの花はな Kimetsu no Yaiba: Shiawase no Hana?) is the first light novel series from the Kimetsu no Yaiba (Manga) written by Aya Yajima.