[18] On December 13, Sasaki received his first shot at the KO-D Tag Team Championship, when he and Antonio Honda unsuccessfully challenged Kudo and Yasu Urano for the title in a three-way match, which also included Hikaru Sato and Masa Takanashi.

[19] After eighteen months of wrestling together, the Italian Four Horsemen disbanded on April 21, 2010, when Sasaki, Honda and Togo defeated Kenny Omega, Kota Ibushi and Kudo in a six-man tag team match.

On August 8, Sasaki defeated Keisuke Ishii in the finals of a four-man tournament to become the number one contender to DDT's top title, the KO-D Openweight Championship.

[25] On November 14, Sasaki won his first title in DDT, when he and Antonio Honda defeated Danshoku Dino and Shiro Koshinaka for the KO-D Tag Team Championship.

[28] After another successful title defense against Mikami and Onryo on January 16, 2011,[29] Sasaki and Honda lost the KO-D Tag Team Championship to Gentaro and Yasu Urano on February 20, ending their reign at 98 days.

[43] As a result, Sasaki and Takanashi were granted a shot at Urano's and Hino's KO-D Tag Team Championship, but failed in their title challenge on January 22.

[45] Sasaki managed to pick up wins against Hiromu Takahashi and Jado, but lost his other six matches in the tournament and finished seventh out of the nine wrestlers in his block.

[48] Back in DDT, Sasaki and Masa Takanashi received a shot at the KO-D Tag Team Championship on June 24, but were defeated by the defending champions, Homoiro Clover Z representatives Kudo and Makoto Oishi.

[51] On July 19, Sasaki made another appearance for NJPW as part of a build-up to a match between Kota Ibushi and IWGP Junior Heavyweight Champion Low Ki.

[54][55] On August 26, DDT General Manager Amon Tsurumi ordered all stables in the promotion disbanded, effectively ending the short-lived Familia.

[57][58] On September 19, Sasaki and Antonio Honda turned on their respective tag team partners Masa Takanashi and Yasu Urano and formed a new stable named "Los Calientes" with Hoshitango.

[60] On September 30, Los Calientes faced off with Masa Takanashi's new stable, formed with Toru Owashi and Yuji Hino in a six-man tag team grudge match.

[61][62] On November 15, Sasaki returned to NJPW, entering the NEVER Openweight Championship tournament, from which he was eliminated after losing to Tomohiro Ishii in his first round match.

[63] DDT's 2012 ended with a storyline, where Sanshiro Takagi brought in the NJPW tag team of Hiroyoshi Tenzan and Satoshi Kojima to stop the Monster Army, in particular Antonio Honda, who had begun stealing other wrestlers' clothes.

[64] At the final event of the year on December 23, the entire Monster Army was defeated in a four-on-three handicap match by Takagi, Tenzan and Kojima, after which Sasaki, Honda, Hino and Hoshitango were all supposedly arrested by the NJPW duo.

[74][75] On May 26, the Monster Army lost the KO-D 6-Man Tag Team Championship to Golden☆Rendezvous～ (Gota Ihashi, Kenny Omega and Kota Ibushi) in their third defense.

[82][83] This built to an eight-man tag team match on August 17, during the first day of DDT's 16th anniversary weekend in Ryōgoku Kokugikan, where Sasaki, Honda, Hino and Hoshitango were defeated by their victims Akito, Kazuki Hirata, Masa Takanashi and Yukio Sakaguchi.

[92][93] On March 21, at Judgement 2014, Monster Army wrestled its final match together, where Sasaki, Honda, Hino and Hoshitango defeated Gorgeous Matsuno, Gota Ihashi, Sanshiro Takagi and Toru Owashi.

[101][102][103] On May 4, Sasaki, Omega and Ibushi lost the title to Shuten-dōji (Kudo, Masa Takanashi and Yukio Sakaguchi) in their second defense, ending their reign at just 22 days.

[107][108] Later in the year, after Kenny Omega had left DDT for NJPW, Sasaki and Ibushi started a match series to find a new member for the Golden☆Storm Riders.

[110][111] The new Golden☆Storm Riders received a shot at the KO-D 6-Man Tag Team Championship on January 3, 2015, but were defeated by the defending champions, Gorgeous Matsuno and the Brahman Brothers (Kei and Shu).

[124][125] On August 23 at Ryogoku Peter Pan, DDT's biggest event of the year, Sasaki and Ibushi defeated Daisuke Sekimoto and Yuji Okabayashi to win the KO-D Tag Team Championship.

[135] On March 21, 2016, at DDT's 19th anniversary event, Sasaki and Shuji Ishikawa defeated Konosuke Takeshita and Tetsuya Endo to win the KO-D Tag Team Championship.

[138] He cashed in the contract on April 24, surprising Harashima after he had successfully defended the KO-D Openweight Championship against Kazusada Higuchi, and defeated him to win the title for the first time.

[146][147] On August 6, Sasaki, Paulie and Endo defeated Shuten-dōji (Kota Umeda, Masahiro Takanashi and Yukio Sakaguchi) in a tournament final to win the vacant KO-D 6-Man Tag Team Championship.

[148] On September 25, Sasaki and Endo attempted to win another title, but were defeated by Harashima and Yuko Miyamoto in a match for the KO-D Tag Team Championship.