My Dad Is a Heel Wrestler(2018)

Original title: パパはわるものチャンピオン

Takashi Omura was once a popular professional wrestler, but he isn't popular anymore. He now wears a cockroach mask and wrestles as a villain. He is married to Shiori and they have an elementary school aged son named Shota. Takashi and Shiori have not yet told their son what Takashi does for a living. One day, Shota finds out that Takashi is a professional wrestler and a villain with a cockroach mask. Shota is shocked and tells a lie to his classmate that his dad is a popular professional wrestler.