1 Work by toastpart1 in 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
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Of Sun and Moon (A Promise Kept) by toastpart1
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
12 Nov 2025
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Summary
The millenia-long war against the demons is finally over. By some miracle Genya’s shattered body has reconstituted itself one final time, but the demon’s presence on earth is waning, and every dose of demon flesh Genya consumes sustains him less than the last.
Tanjiro has fulfilled his duty and banished the darkness once and for all with his fellow slayers, but the war will take its toll on his body. Just as was foretold in the Ubuyashiki scrolls, as a marked slayer, his life will come to an end by the time he reaches twenty-five, in eight short years.
With their limited time, Genya and Tanjiro decide to make the most of their lives.