Heavy, real Buddhist doctrine. Make sure you want to carry it.

What a Japanese person actually thinks
Sombre and instantly recognizable. Most people will hear the Heike opening in their head. It reads as serious and slightly funereal — which may be exactly what you want.

Meaning

Literally: all phenomena + no permanence
Actually: All things are impermanent. A core Buddhist teaching, and the opening line of the Tale of the Heike — which every Japanese person memorized in school.

Scores

Naturalness●●●●●

Established Buddhist term, universally known.

Coolness●●●●●

Real gravity, no posturing. Docked a point because the association is specifically with death and mourning.

Watch out

mediumThis is doctrinal Buddhist language with strong funerary associations. It's not a neutral 'nothing lasts forever' — to many readers it's closer to a memorial inscription.

On skin

諸行無常

Orientation: vertical

Mincho, vertical, restrained. Anything decorative fights the meaning.