Both World Boxing Association ‘’super,’’ International Boxing Federation and World Boxing Council bantamweight champion Naoya ‘’Monster’’ Inoue of Ohashi Boxing Gym and World Boxing Organization bantamweight kingpin Paul Butler of Britain cleared the weigh-ins on Dec. 12 for their title unification fight in Tokyo on the following day.

The 29-year-old Inoue tipped the scales at the class limit of 53.45 kg (117.84 lbs) while the 34-year-old Butler weighed in at 53.50 kg (117.9 lbs) at a hotel in Yokohama, setting the stage for their showdown at Ariake Arena.

While Inoue was about 30 grams over the bantamweight limit of 53.52 kg (118 lbs) in his first attempt, he cleared the weigh-in five minutes later as he went to the toilet. A digital weight scale was introduced at the last minute.

Inoue told surrounding reporters after the customary face-off with Butler, ‘’I think he is an able boxer as he looked confident. I will keep my eyes open and brace myself for the fight. I will fight with my intuition after climbing through the ropes.’’

In the day’s meeting for rules, Inoue will use block-colored Reyes-made gloves while Butler will wear Pakistan-made white-colored RDX gloves.

Judges’ scores will not be announced during the 12-round fight. Bence Kovacs of Hungary will serve as a referee. Three judges are Ronald McNeil of the United States, Ignacio Robles of Panama and Fernando Barbosa of the U.S.

Inoue has 23 straight wins, including 20 knockouts. For his part, Butler has a record of 34 wins, including 15 knockouts, against two losses.