Demon Slayer: Kimetsu No Yaiba, the Sun and the Moon Shine Together

Muhan's death brought long-lost peace to mankind, and everyone in Tanjiro's life finally got back on track. However, beneath this calm surface is a new round of undercurrents. One unusual night, when the boy in red with earrings appeared in front of Tanjiro, a new war began. "Mr. Tanjiro, when we meet you for the first time, my name is Yoshitsugu Kuni." [I am purely amateur, please feel free to comment if there are any shortcomings] (The timeline of this book is that there is no tragic death, no transcendence, no system, and the world view is based on the original work)