'Blood of the wolf'. Reads as a light-novel subtitle.

What a Japanese person actually thinks
Reads as fiction. A Japanese person will parse it as the name of something — a manga volume, a band, a shochu brand — rather than as a statement about the wearer.

Meaning

Literally: wolf + of + blood
Actually: Grammatical. Also exactly the shape of a hundred fantasy-novel titles.

Scores

Naturalness●●●●●

Correct Japanese, no idiomatic standing.

Coolness●●●●●

Four characters with a の in the middle. The particle makes it read as a title rather than a motto.

Watch out

Nothing embarrassing lurking in here.

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一匹狼 ippiki ōkami
lone wolf; one who works alone

The established Japanese phrase, used about real people every day. Says the same thing without the novel cover.

On skin

狼の血

Orientation: vertical

N/A — change the words.