Description
Buaku(武悪 (ぶあく) – “comedic demon mask” – [Noh mask]
• About this mask: A Noh mask with a comedic expression, as though it were holding back laughter, anger, embarrassment or crying (depends which way you tilt it or the how the light hits it (& the story of the play its in) – it has gold-plated magical eyes & clenched teeth suggesting that it is perhaps holding back great power! (supposedly it’s an exaggerated version of the O-beshimi masks typically used for Tengu related performances in Noh theatre, hense the big nose.) – it comes in a few colours (Commonly Red, Black & Blue.) sometimes its eyes appear as if they’re bulging from its head!
‘Aku’ typically means ‘Evil’ so, in Noh theatre; the role this mask is often used for is typically villain/adversary roles; Oni, Demons, Bad guys, etc. (A couple notable ones include ‘Raijin’ the thunder god & ‘King Enma’ the judge of the underworld himself!) — seeing as this is usually a kyogen mask its usually used for humerous skits & break performances. – Rather comically, this mask is also often used for the giant mushroom in “Kusabira.” – a Kyogen skit about a yamabushi monk; who try’s to exterminate mushrooms from his neighbours garden, but he somehow makes things worse! causing the yokai mushrooms to multiply!! – In the end; he accidentally summons a gigantic evil mushroom that chases everyone off of stage!

[Bottom right, Toriyama Sekiens Hyakki Treasure Bokkuro [1784]]
A Buaku mask is also one of five noh masks which appear in Toriyama Sekiens Hyakki Treasure Bokkuro [1784] – (for more on that; see my entry on “Menreiki.”) – The mask featured there has a very exaggerated, wrinkled fore-head; something which ordinary buaku masks typically dont have, making it feel like it’s come to be “alive” – (Note: My art is supposed to remind you of the living mask featured there rather than an ordinary bishemi! see also Menreiki)
see also: O-bishimi, Menereiki

![Buaku - [Noh Mask]](https://samkalensky.com/wp-content/uploads/2026/03/EEAD6BAA-2029-4F86-B79D-20F29616EFDB-scaled.jpg)
![Buaku - [Noh Mask] - Image 2](https://samkalensky.com/wp-content/uploads/2026/03/96669789-4FDD-4881-A51C-CC6F49112EEB-scaled.jpg)
![Buaku - [Noh Mask] - Image 3](https://samkalensky.com/wp-content/uploads/2026/03/A60677F3-39BF-47B5-819A-6CCFA94103281.jpg)
![Kura yarō - [Yokai|Tsukumogami]](https://samkalensky.com/wp-content/uploads/2026/03/samkalensky-39mMqRmo61ETD7voeRmaz-6D2944B3-3190-45C2-B60B-E6859E1EE236-324x324.jpg)
![Choku-boron - [Yokai|Tsukumogami]](https://samkalensky.com/wp-content/uploads/2026/03/IMG_3223-324x324.jpeg)
![Hossumori - [Yokai|Tsukumogami]](https://samkalensky.com/wp-content/uploads/2026/03/1766198851984-48w6agsvxku-324x324.jpg)
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