General background: setting of a post-apocalyptic world where zombies are rampant
1. Zombies must be killed by headshots. The danger and difficulty of defeating are a little higher than The Walking Dead but much lower than World War Z. They can't run or climb stairs. (After death, the body becomes rigid and the joints become stiff, so those works that set zombies to run and climb are really funny to the living.)
2. The relative age settings of the characters are consistent with the original work.
3. Wanshiwu doesn't know the Shinsengumi and the Mikaigumi, the Mikaigumi protects the center of the shogunate, the Shinsengumi is on the periphery, and neither party is familiar with them.
4. Nobunaga is dead, three years after Kagura takes Xiaodama and joins Wanshiya.
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The apocalyptic story of Kagura abandoning the Lily line and taking the BG line after the death of Nobu and falling in love with Sougo.
Conception: