Volume 21

Ancient Memories (の) is the twenty-first volume of Kimetsu no Yaiba.

Chapters

 * 179. Feelings for Elder Brother, Feelings for Younger Brother (兄を想い弟を想い)
 * 180. Recovery (恢復)
 * 181. Disaster (大災)
 * 182. Rage (激怒)
 * 183. A Clash of Wills (閲ぎ合い)
 * 184. Leaving the Warfront (戦線離脱)
 * 185. A World Without Smell (匂いのない世界)
 * 186. Ancient Memories (古の記憶)
 * 187. Innocent Person (無垢なる人)

Synopsis
In Taisho-era Japan, kindhearted Tanjiro Kamado makes a living selling charcoal. But his peaceful life is shattered when a demon slaughters his entire family. His little sister Nezuko is the only survivor, but she has been transformed into a demon herself! Tanjiro sets out on a dangerous journey to find a way to return his sister to normal and destroy the demon who ruined his life.

The fight with Kokushibo, the highest-ranking demon among Muzan's servants, is over. Although Himejima and Sanemi defeated Kokushibo and sent him to hell, the price the Demon Slayer Corps has paid is very high. Kiriya Ubuyashiki, the new leader of the Demon Slayers, struggles to recover from the losses. With the battle against Muzan far from over, the remaining fighters will need his help more than ever. Meanwhile, deep within Infinity Castle, Tanjiro and his friends come face-to-face with their nemesis at last…

Author's Comment
"Hi, I'm Gotouge. Since the start of 2020, we've been stuck indoors listening to nothing but depressing news. Despite that, I hope you're doing well. There hasn't been a day without trouble since the start of my serialization. I feel like my soul is breaking into pieces every day, but I've been using duct tape to piece it back together so I can keep moving forward.

I think a lot of my readers feel the same way. We don't necessarily have an enemy, but we feel like we must fight and win. Those of us who've been holding on, repeating to ourselves that we can't lose, are courageous warriors. I hope fortune smiles upon you."

Special Edition Bonus
The special edition copies of the volume include a box containing 32 full-color character stickers and 32 stickers with character names written in both Japanese and Romaji. The stickers feature an illustration of each character against a backdrop of a colored manga panel.