Two fires stacked. Far better than the single 火.

What a Japanese person actually thinks
Hot-blooded and a bit dramatic, in the sports-manga register. Sincere rather than silly — 情熱の炎 ('the flame of passion') is a phrase people actually use.

Meaning

Literally: fire over fire
Actually: Flame, blaze. Used metaphorically for burning passion or anger much the way English does.

Scores

Naturalness●●●●●

Normal word.

Coolness●●●●●

The doubled structure is visually excellent and instantly legible even to non-readers.

Watch out

Nothing embarrassing lurking in here.

On skin

炎

Orientation: either

Bold brush. The stacked structure wants weight.