At The Final Gate 2018 on December 23, he teamed up with Ben-K as "Big Ben", a sub group of the stable to defeat MaxiMuM (Naruki Doi and Masato Yoshino), Mexablood (Bandido and Flamita) and Tribe Vanguard (Yamato and Kagetora) in a four-way elimination match to win the vacant Open the Twin Gate Championship.

[7] Shimizu also wrestled in various battle royals such as the one from the eleventh night of The Gate Of Passion on April 22, 2021 where he faced Ryo Saito, Dia Inferno, Diamante, Gamma, Ho Ho Lun and Konomama Ichikawa, Masaaki Mochizuki, Mondai Ryu, Shachihoko Boy, Super Shisa, Takashi Yoshida, Último Dragón and Yosuke♡Santa Maria.

His story in the King of Gate tournament continued in the 2014 edition, where he fell short to Shingo Takagi in a first round match from May 17.

[10] He marked his best result at the 2016 edition, where he won the Block D scoring a total of eight points after competing against Masato Yoshino, Gamma, Naruki Doi, Genki Horiguchi and El Lindaman.

[13] His last match took place at the 2020 edition where he teamed up with Punch Tominaga and Naruki Doi in a losing effort to Kazma Sakamoto, Kento Kobune and Takashi Yoshida for the vacant Open the Triangle Gate Championship.