Episode 15

Mount Natagumo (那田蜘蛛山) is the 15th episode of the Kimetsu no Yaiba TV anime series.

Synopsis
Their next destination is to the north-northwest. Tanjiro and Nezuko head towards Mount Natagumo with Zenitsu and Inosuke. This mountain is covered with spider webs and is swarming with innumerable spiders. Leaving the cowering Zenitsu behind, Tanjiro and Inosuke head up the mountain where they run into fellow Demon Slayers entangled in spider webs.

Plot
Zenitsu has been told Nezuko is Tanjiro's sister and develops a crush on her. A Kasugai Crow comes after the doctor says they're healed and tells the three to go Mt. Natagumo. They head out.

They eventually come in sight of the mountain, though Zenitsu is too scared to go on. Tanjiro smells something and runs to it, Zenitsu forced to follow so he isn't left alone. They find a wounded Demon Slayer collapsed on the path but he is yanked into the trees by threads attached to him. They find another terrified demon slayer, Murata, who tells them ten higher ranked demon slayers, including him, came to the mountain, but they started killing each other.

An exhausted Kasugai Crow is shown on the lap of the Demon Slayers' commander, who notes many have been killed and thinks the Twelve Kizuki may be there. He sends Giyu and Shinobu to the mountain as backup.

Meanwhile, Zenitsu still sits on the path, having been left when Tanjiro and Inosuke ran forward. He cajoles himself into going when he realizes Tanjiro took "his Nezuko" into the mountain.

At the mountain, the captured Demon Slayers walk out from the trees and start attacking Tanjiro's group. Tanjiro stops Inosuke from attacking as some are still alive. He smells the threads attached to them and realizes that's how they're being manipulated. Inosuke frees them but a demoness sends her spiders to reattach the puppet strings to the Demon Slayers.

A white-haired demon boy suddenly appears above them, standing on threads, and says mother will kill them before leaving. To himself, he says no one will stop the five of them from living as a happy family.

While Tanjiro and Murata keep the controlled Slayers busy, Inosuke uses his Beast Breathing, Seventh Form: Spatial Awareness to locate the demon responsible.

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Эпизод 15