Initially under his real name and later in all caps as Mikami, he developed the gimmick of an aloof high-flyer, nicknamed "Suicide Boy", who carried a metal ladder to the ring to use it as both a weapon and a jumping platform.

In April 2000, after Mikami's return to Japan from a stint in International Wrestling Association, he formed the tag team Suicide Boyz with Thanomsak Toba.

In 2005, he launched Cruiser's Game, his own brand within Dramatic Dream Team, which focused on junior heavyweight action.

It saw the participation of names like Kota Ibushi, Kaz Hayashi, Taka Michinoku, Cima and The Great Sasuke.

Mikami made his return to DDT on March 20, 2022, at Judgement 2022: DDT 25th Anniversary where he teamed up with Poison Sawada Julie, Akarangers (Takashi Sasaki and Gentaro and his Suicide Boyz tag partner Thanomsak Toba, being accompanied to the ring by Naomi Susan to defeat Toru Owashi, Antonio Honda, Kazuki Hirata and Yoshihiko for the KO-D 10-Man Tag Team Championship.