Naoya Inoue is set to challenge Stephen Fulton of the United States for the WBC and WBO super bantamweight titles on May 7 at Yokohama Arena, his Ohashi Gym said Monday.
Inoue, nicknamed "Monster," for his domination in the ring, has moved up to the super bantamweight division after completing a sweep of the WBA, WBC, WBO and IBF bantamweight championships with an 11th-round knockout of Britain's Paul Butler last December.
Both fighters are undefeated. The 28-year-old Fulton is 21-0 with eight knockouts while Inoue, who will turn 30 on April 10, is 24-0 with 21 KOs.
If he wins, Inoue, ranked No.1 by both the WBC and WBO, will become the second Japanese man to win world championships in four different weight classes, following Kazuto Ioka.