There is a plan in place for the Shigeokas to collect all the strawweight titles and find a way to keep all the belts in the family.

Yudai and Ginjiro Shigeoka have a chance to make history as the first pair of brothers to win major titles at the same weight on the same show. Older brother Yudai meets Panya Pradabsri in a WBC strawweight title unification bout, while Ginjiro attempts to upgrade his interim IBF 105-pound belt in a rematch versus full IBF title claimant Daniel Valladares.

From there, the idea is for both to further unify after which time the 5’3 ½” Yudai Shigeoka will eventually outgrow the division. That will leave his younger brother to pick up the pieces and collect all the chips.

“My brother and I plan to each win titles before he moves up,” Ginjiro Shigeoka told BoxingScene.com in a provided and translated quote. “Then I will defeat whoever else has a world title. I will become undisputed champion when my brother moves up and conquers [junior flyweight].”

Ginjiro Shigeoka (9-0, 7KOs; 1NC) is a surprisingly heavy betting favorite to defeat the visiting Valladares (27-3-1, 15KOs; 1NC) in their title consolidation bout this Saturday at Ota-City General Gymnasium in Tokyo. The bout will air live on Abema TV, which carried their truncated January 6 affair where Valladares was left unable to continue due to a clash of heads shortly before the end of the third round of their title fight in Osaka.

Monterrey’s Valladares was still on the mend when it came time to honor a mandatory title defense in another rematch, this versus Rene Mark Cuarto. The development allowed the 23-year-old Shigeoka to swoop in and claim the interim IBF strawweight title, though he had to overcome a knockdown to drop and stop Cuarto in the ninth round of their April 16 meeting at Yoyogi #2 Gymnasium in Tokyo.

Saturday’s rematch versus Valladares was delayed by nearly two months when Shigeoka suffered a leg injury.

Yudai Shigeoka was permitted to challenge for the interim WBC title on the same April 16 show when Thailand’s Pradabsri (40-1, 24KOs) fell ill and had to withdraw on less than two weeks’ notice. The elder and bigger of the Shigeoka brothers ran through former WBO strawweight titlist Wilfredo ‘Bimbito’ Mendoza in a seventh-round stoppage to keep his place in line for the main WBC title.

Wins by both on Saturday will see Ginjiro and Yudai join a growing list of brothers who’ve captured major titles as pros. Fittingly, they are both promoted by Koki Kameda, a former three-division champ who is in the Guinness Book of World Records along with brothers Daiki and Tomoki as the only trio of siblings to simultaneously hold major titles which they accomplished in 2013.

Jermall and Jermell Charlo made history more than seven years ago by winning separate junior middleweight title fights on the same May 2016 show in Las Vegas. Jermall entered the ring as the reigning IBF 154-pound titlist, which he defended in a 12-round win over Austin Trout. The win preserved the history achieved when twin brother Jermell Charlo rallied to knock out John Jackson in the seventh round of their vacant WBC junior middleweight title fight.

Jake Donovan is a senior writer for BoxingScene.com. Twitter: @JakeNDaBox