What possibly could be wrong with this tattoo (Gemini Symbol in Chinese/Japanese characters)?
Nothing is wrong with it. Except that the characters are really ugly. And the artist person who drawn this tattoo mess has absolutely no idea about the bǐshùn/hitsujun rules (the order in which the strokes of a Chinese character are written). And the two components of the first ideogram do not resemble each other, as would be expected since the ideogram which means "dual/set/pair/twin". And the second character looks more like a distorted swastika than a depiction of the "子" Hanzi/Kanji. And the third character has no resemblance with the Kanji/Hanzi for "constellation (座). And the entire tattoo is hideous. Besides all these, there is nothing wrong with this tattoo doodle.
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This is NOT a Kanji / Hanzi tattoo. This is just a doodle.