It is impossible to trace when human genders were divided into six types. Whether it was evolution or degeneration, whether civilization was subverted, or whether it pushed biological evolution to its peak.
However, this profound evolutionary issue does not seem to affect the normal lives of ordinary people.
But no one stipulates that Alpha must find an Omega, and Bate must find a Bate to spend the rest of his life.
Young Madam: You think so? Little cutie~
Young Master: Do you want to die?
Young Madam: No!
Young Master: If you don't want to, just shut your mouth.