please improve the consistency of the paragraph.
Okinawan fishermen regularly provided support for their mixed-race children and mistresses. Most returned to Okinawan fishermen's homelands after a few years and left Okinawan fishermen's their mixed-race families.
Okinawan fishermen regularly provided support for their mixed-race children and mistresses, although most returned to their homelands after a few years and left behind their mixed-race families.