KO-D無差別級王座
Ibushi made his return at a DDT event on May 4, 2012, losing to El Generico. On June 24, Ibushi defeated Yuji Hino to win DDT's KO-D Openweight Championship for the second time. On August 18, Ibushi defeated Kenny Omega in the main event of Budokan Peter Pan to retain the KO-D Openweight Championship. On September 30, Ibushi lost the title to El Generico. On October 3, Ibushi won the third annual DDT48 general election and, as a result, earned an immediate rematch with El Generico. Ibushi received his rematch on October 21, but was again defeated by El Generico. On May 26, Ibushi, Gota Ihashi and Kenny Omega defeated the Monster Army (Antonio Honda, Daisuke Sasaki and Yuji Hino) to win the KO-D 6-Man Tag Team Championship. Their reign lasted 28 days, before they lost the title back to the Monster Army, now represented by Honda, Hino and Hoshitango. On August 18 at DDT's annual "Ryōgoku Peter Pan" event, Ibushi faced New Japan representative and reigning IWGP Heavyweight Champion Kazuchika Okada in a losing effort in a special non-title match. On January 26, 2014, Ibushi and Kenny Omega defeated Yankii Nichokenju (Isami Kodaka and Yuko Miyamoto) and Konosuke Takeshita and Tetsuya Endo in a three-way match to win the KO-D Tag Team Championship. On April 12, Ibushi and Omega became double champions in DDT, when they teamed with Daisuke Sasaki to defeat Team Drift (Keisuke Ishii, Shigehiro Irie and Soma Takao) for the KO-D 6-Man Tag Team Championship. Their reign, however, lasted only 22 days, before they lost the title to Shuten-dōji (Kudo, Masa Takanashi and Yukio Sakaguchi) on May 4. On September 28, Ibushi and Omega lost the KO-D Tag Team Championship to Konosuke Takeshita and Tetsuya Endo. On February 15, 2015, Ibushi won the KO-D Openweight Championship for the third time, defeating Harashima. He lost the title back to Harashima on April 29. On August 23, Ibushi won the KO-D Tag Team Championship for the fifth time, when he and Daisuke Sasaki defeated Daisuke Sekimoto and Yuji Okabayashi for the title. They vacated the title on November 2, when Ibushi was sidelined indefinitely with a cervical disc herniation.