After his stint as a public servant and an exhibition game with DK Yoo, Manny Pacquiao appears to be doing more just sign with Japan-based Rizin Fighting Federation for more exhibition fight in 2023. After a successful fight with DK Yoo in Goyang, S. Korea, Manny Pacquiao signs with Rizin Fighting Federation for a one-fight deal in Japan. Pacquiao made the announcement during Rizin’s New Year’s Eve card at Saitama Super Arena outside Tokyo. Rizin…