He won the first title of his career at DDT's 21st Anniversary show, the KO-D 6-Man Tag Team Championship with Koju Takeda and Kota Umeda after defeating Shuten-Dōji (Kudo, Masahiro Takanashi and Yukio Sakaguchi) in a six-man tag team match. He also won the KO-D Tag Team Championship with his tag team partner Naomi Yoshimura at DDT's 2020 New Year Special after defeating Damnation (Daisuke Sasaki and Soma Takao). Ueno defeated Chris Brookes at Ultimate Party 2020 to win the DDT Universal Championship on November 11. He is also a six-time holder of the comedic Ironman Heavymetalweight Championship, winning it for the first time at DDT Beer Garden 2019 after drinking a beer can. At Judgement 2020: DDT 23rd Anniversary, on March 20, 2020, Ueno teamed up with fellow Disaster Box stablemates Naomichi Marufuji and Harashima to defeat All Out (Akito, Yuki Iino and Royce Chambers).
