DANGER. As printed on a high-voltage box.

What a Japanese person actually thinks
Pure signage. Yellow-and-black diamond, construction site, electrical cabinet. It reads as a warning about equipment, not as a warning about you.

Meaning

Literally: danger + risk
Actually: Danger; hazardous. The standard warning-label word.

Scores

Naturalness●●●●●

Correct.

Coolness●●●●●

There's a knowing, ironic reading where this is funny on purpose. If that's the plan, fine. If it isn't, it's just a sign.

Watch out

mediumThis word's habitat is almost entirely industrial safety labelling.

Get this instead

猛 mō
fierce; ferocious

If you want to signal 'dangerous person', this is the character for ferocity — used in 猛烈, 猛獣. Reads as force, not as signage.

On skin

危険

Orientation: either

N/A unless the joke is intentional.