The Natagumo Mountain Arc is the fifth arc of Kimetsu no Yaiba.

Synopsis

Tanjiro, Zenitsu, and Inosuke go on their first mission together and venture to Mount Natagumo.

The Hashira are called into action.

Too afraid to go up the spooky mountain with Tanjiro and the wild boar, Zenitsu stays behind. Tanjiro and Inosuke encounter a mountain laced with spider webs and controlled by Spider Demons. These Demons have already dispatched countless Demon Slayers, forcing Kagaya to send in the Hashira as reinforcements.

Zenitsu ascends the mountain after realizing Tanjiro has taken Nezuko into danger. After convincing Inosuke to work together, Tanjiro and the wild boar defeat the Mother of the Spider Clan. Zenitsu encounters the brother and hones his abilities to the utmost limit. Despite getting poisoned, Zenitsu bests the Spider Demon alone.

Tanjiro fights to protect his bond with Nezuko.

As Tanjiro tries to treat Inosuke's wounds from battle, they encounter the Sister spider and then her Father. The Father demon separates Tanjiro from Inosuke and takes on the lone boar. Meanwhile, Tanjiro encounters Rui, the creator of the clan.

Giyu and Shinobu of the Hashira arrive on the Mountain and rescue both Zenitsu and Inosuke. Tanjiro calls the bonds between the Spider Family fake, enraging Rui. They engage in a fierce fight where Rui intends to kill Tanjiro and make Nezuko his own sister.

Tanjiro and Nezuko are captured by the Demon Slayer Corps.

Refusing to sever their own bonds, Tanjiro and Nezuko fight back and nearly defeat the Demon with newly awakened abilities. Tanjiro unlocks his ability to use his father's Hinokami Kagura dance and Nezuko unleashes her very own Blood Demon Art.

However, Rui survives the battle and nearly kills them both. Giyu rescues the siblings in time and effortlessly defeats Rui. At the same time, Shinobu dispatches the Sister of the family, finishing off the Demons. Rui regains his human memories and regrets his actions before entering the afterlife, where he reunites with his family.

Shinobu attempts to kill Nezuko because she's a demon but Giyu defends the siblings. Tanjiro tries to escape with Nezuko but they're caught by Kanao. Shinobu warns Giyu and Tanjiro that they're both going against corps rules by aiding a demon. Before things escalate, Kusagai Crows announce that both siblings are to be taken into custody.

Significant Events

Storyline

Natagumo Mountain Arc

The group recieves orders to investigate Natagumo Mountain
The group getting orders to head to Natagumo Mountain.png
The group arrives at Natagumo Mountain
Natagumo Mountain Anime.png
Tanjiro and Inosuke meet Murata
Murata surprised by Tanjiro.png
Giyu and Shinobu Kocho are sent to investigate
Giyu and Shinobu being sent to investigate.gif
Tanjiro and Inosuke discover the Demon Slayer puppets
Ozaki being controlled.png
Tanjiro encounters Rui
Rui appearing above Tanjiro.png
Tanjiro and Inosuke encounter the Mother Spider Demon's Doll
Tanjiro defending Inosuke from Mother Spider Demon's doll.png
Tanjiro Kamado and Inosuke Hashibira vs Spider Demon (Mother)
Mother Spider Demon getting serious.png
Zenitsu encounters the Spider Demon (Son)
Zenitsu's fright of the Spider Demon.png
Zenitsu's training flashback
Jigoro comforting Zenitsu.png
Zenitsu Agatsuma vs Spider Demon (Son)
Zenitsu vs Son Spider Demon.gif
Tanjiro and Inosuke encounter the Spider Demon (Father)
Father Spider Demon looking for Inosuke.png
Tanjiro Kamado and Inosuke Hashibira vs Spider Demon (Father)
Tanjiro & Inosuke fighting Father Spider Demon.png
Shinobu discovers Zenitsu
Shinobu finding Zenitsu.png
Tanjiro is separated from Inosuke and discovers Rui and the Daughter Spider Demon
Tanjiro discovers Rui and Daughter Spider Demon.png
Giyu arrives to assist Inosuke
Giyu tying Inosuke.png
Tanjiro Kamado vs Rui
Tanjiro fighting Rui.gif
Giyu arrives to assist Tanjiro
Giyu using Eleventh Form on Rui's attack.gif
Daughter Spider Demon's memories
The Daughter Spider Demon welcomed to the family.png
Shinobu Kocho vs Spider Demon (Daughter)
The Daughter Spider Demon fighting Shinobu.gif
Giyu stops Shinobu from chasing Tanjiro and Nezuko
Giyu holding down Shinobu.png
An order is made to retrieve Nezuko and Tanjiro
Tanjiro is retrieved by the Kakushi.png

Natagumo Mountain Arc

Receiving orders to investigate Natagumo Mountain
The group receiving orders to head to Natagumo Mountain CH28.png
The group arrives at Natagumo Mountain
Mount Natagumo.png
Tanjiro and Inosuke meet Murata
Tanjiro and Inosuke protecting Murata CH29.png
Giyu and Shinobu Kocho are sent to investigate
Shinobu receives orders.png
Tanjiro and Inosuke discover the Demon Slayer puppets
Ozaki.png
Tanjiro encounters Rui
Rui body.png
Tanjiro and Inosuke encounter the Mother Spider Demon's Doll
Mother Spider Demon's doll.png
Tanjiro Kamado and Inosuke Hashibira vs Spider Demon (Mother)
Mother Spider Demon body.png
Zenitsu encounters the Spider Demon (Son)
Zenitsu running from the Son Spider Demon.png
Zenitsu's training flashback
Jigoro profile.png
Zenitsu Agatsuma vs Spider Demon (Son)
Zenitsu evading the Son Spider Demon's Blood Demon Art.png
Tanjiro and Inosuke encounter the Spider Demon (Father)
Father Spider Demon appears.png
Tanjiro Kamado and Inosuke Hashibira vs Spider Demon (Father)
Father Spider Demon after transforming CH36.png
Shinobu discovers Zenitsu
Shinobu finds Zenitsu.png
Tanjiro is separated from Inosuke and discovers Rui and the Daughter Spider Demon
Tanjiro discovers Rui in the forest.png
Giyu arrives to assist Inosuke
Giyu tying up Inosuke in a tree CH38.png
Tanjiro Kamado vs Rui
Tanjiro attacking Rui CH39.png
Giyu arrives to assist Tanjiro
Giyu arrives at Mount Natagumo CH37.png
Shinobu Kocho vs Spider Demon (Daughter)
Shinobu appears behind.png
Giyu stops Shinobu from chasing Tanjiro and Nezuko
Shinobu questions Giyu.png
An order is made to retrieve Nezuko and Tanjiro
Announcement to capture Nezuko and Tanjiro.png

 
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References

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