A japanese word that roughly translates to "black person" with "koku" being the color black (or dark) and "jin" meaning man (although gender is typically neutral). The word kokujin is not derogatory unlike the word kurombo and should also not be confused with gaikokujin (non-japanese person).
Someone who is addicted to obtaining money and building wealth. A money addict and fanatic. Breadheads often work more than one full-time job, and some even participate in illicit activities to "obtain the bread".