(Yeah, I drew this one in under 5 hours... Because why not, I'm bored.)

Source: https://www.pixiv.net/en/artworks/50533174

Sketch

Source: https://x.com/FreshMojaveMeme/status/2079369891690471452?s=20

Source: https://x.com/Reizett/status/2079200312535953428?s=20

Source: https://www.instagram.com/reel/DaIUfGHu91I

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I tried to translate the Siddhaṃ script characters in the image, or at least convert them to Devanagari script. This is what I managed to do so far:

Assuming it's written in vertical lines from right to left, just like Japanese (not just because Touhou Project is Japanese media, but also because Siddhaṃ script continued being used by Japanese schools of Esoteric Buddhism and texts in Siddhaṃ script by Japanese monks were written that way as well), then it'd look like this when converting it to Devanagari script:

अं स पत झी न

य भज

मि ज य

जं प् ध

म सवा

मि न

र क्ष भ

व ओु सव हा

When converting this to the Latin alphabet, it'd look like this:

aṃ sa pta jhī ne

ya bhaja

mi ja ya

jaṃ p dha

ma savā

mi na

ra kṣa bha

va o'u sava hā

I know that several Siddhaṃ characters and combinations of them are used in the context of Japanese Buddhism as "seed syllables" (single-syllable mantras, meant to represent the essence of Buddhist deities and concepts):

• अं ["aṃ"] refers to Fugen Bosatsu (Samantabhadra Bodhisattva in original Sanskrit).
• स ["sa"] is linked to both Shou-Kannon (Āryāvalokiteśvara) –the root form of Kannon (Avalokiteśvara)– and Benzaiten (Sarasvatī).
• वा ["vaā"] refers to Fuuten (Vāyu).
• व ["va"] is related to Suiten (Varuṇa).
• म ["ma"] can represent either Kujaku Myou'ou (Mahāmāyūrī), Daikokuten (Mahākāla), or Marishiten (Mārīcī).

However, there are still several characters that I don't know who or what they're meant to represent.

I'll openly admit that I'm utterly uncultured in these matters. So, if someone else actually knows about this and can do a better job at either translating it or making some sense of it, feel free to do so.

Source: https://x.com/lvseshan643/status/2078776004752167399?s=20

source