Actor Leo Asaka, who comes from a family of performers, has always been associated with his father's accomplishments. Despite this, when he receives an offer to star in a film alongside Eito Yanagi, another second-generation actor, he feels compelled to accept it. Although Leo is initially hesitant about working with the promiscuous alpha Eito, their relationship takes a dramatic turn when they are forced to spend time together in a hotel room. During this time, Leo discovers that Eito is an omega, a gender that is often stigmatized within the acting community. Despite this revelation, Leo and Eito share a passionate kiss, but must navigate their relationship in a society that may not approve of their pairing.
Boku no Tsugai wa Thoroughbred Ω was published digitally in English as His Partner, the Thoroughbred Omega by Renta! from May 14 to August 6, 2021.