Reveal new cast members for the anime Kimetsu no Yaiba

 During the event Machi Asobi revealed four new cast members for the anime based on Koyoharu Gotouge's manga, Kimetsu no Yaiba. The series has been broadcast since April 6 and will have 26 episodes.

The new members of the cast are:

Toshihiko Seki as Muzan Kibutsuji.

 Ryohei Kimura as Swamp Demon.

 Jun Fukuyama as Yahaba.

 Mikako Komatsu as Susamaru.

Voices that join the cast that includes:

Natsuki Hanae as Tanjirō Kamado.
Akari Kito as Nezuko Kamado.
Hiro Shimono as Zenitsu Agatsuma.
Yoshitsugu Matsuoka as Inosuke Hashibira.
Takahiro Sakurai as Giyū Tomioka.
Houchu Ohtsuka as Sakonji Urokodaki.
Yuuki Kaji as Sabito.
Ai Kakuma as Makomo.
Nobuhiko Okamoto as Genya.
Toshiyuki Morikawa as Kagaya Ubuyashiki.
Shiori Izawa as Guide (white hair).
Aoi Yūki as Guide (black hair).
Takumi Yamazaki as Kasugaigarasu.
Daisuke Namikawa as Haganezuka.
Hikaru Midorikawa as Odō no Oni.
Takehito Koyasu as Teoni.
The official website and the twitter account of the anime published a promotional video for the cast, announcing that the characters will appear in the series from the sixth episode.

Staff
Haruo Sotozaki (Tales of Zestiria the X, Tales of Symphony the Animation) directs the anime in the ufotable studies (Fate / Zero, Kara no Kyōkai, Katsugeki: Touken Ranbu).
ufotable is also credited script writing.
Akira Matsushima (Maria-sama ga Miteru, Tales of Zestiria the X) is responsible for character design in conjunction with Miyuki Sato, Yoko Kajiyama and Mika Kikuchi, who work as secondary character designers.
Yuki Kajiura (Sword Art Online, Fate / Zero, Mahō Shōjo Madoka Magica) and Gō Shiina (Tales of Zestiria the X, Jūni Taisen, God Eater) is responsible for the composition of the soundtrack.
Hikaru Kondo is in charge of the production.

Synopsis
Since antiquity, rumors abounded about the devouring demons of men lurking in the forest. Because of this, local people never venture there at night. 
Legend has it that a demon killer also wanders at night, chasing these bloodthirsty demons. And it is that for the young Tanjirou these rumors will become their harsh reality ...
Since the death of his father, Tanjirou has vowed to support his family. Although their lives have been difficult since then, they have been able to find happiness. But that balance so hard to achieve is destroyed one day when Tanjirou finds his whole family murdered and the only survivor, his sister Nezuko, has become a demon.
To her surprise, she discovers that Nezuko maintains her sanity and memories, so, this will be the beginning of Tanjirou's fight against the demons and the search for ways to make her sister become human again.
Source: ANN