The 33 year-old came through 59-55, 59-56 and 58-56 on the scorecards after the bout has halted prematurely due to a cut suffered by Takayama from an accidental headbutt.
Takayama claimed the WBO version for the second time in his career following previous reigns as the WBC and IBF belt holder (twice). The victory means Takayama improves to 31-8 as a professional.
In the co-feature, Australian Louisa Hawton upset Kei Takenaka on points to pick up the women’s WBO light-flyweight championship and improve to 7-0 in the process.
Elsewhere in Mexico, former super welterweight world title holder Carlos Molina dominated Carlos Gorham to make it five straight wins since losing the IBF strap to Cornelius Bundrage.
Molina dropped down to 147 pounds in January this year and has already posted four triumphs to place himself in the mix for a future world title shot at the lower limit.
Over in the United States, Luis Arias is now 16-0 with a fourth round knockout of Darryl Cunningham to win the vacant USBA middleweight title in Wisconsin.
Caleb Truax and Carson Jones halted Zachariah Kelly and Starr Johnson during the second round in the events’ other notable contests.