3.11
Marx said as he crossed his arms and leaned against the wall.”
Extra endquote.
“To be more precise, I’m a double.”
This is called “a hybrid” species or “mixed” race.
“Double” has literally the opposite meaning of “hafu,” if you're translating the word I think you're translating. “A double” also has the common meaning of someone who has the same appearance as someone else, so this is extra confusing.
You do hear “I'm half [whatever]” in English, (which is almost certainly where “hafu” comes from,) so transliterating to “half” would make more sense than “double” does, but neither is good, IMHO.