By day, Romeo Maki is a respectable man who loves bringing gifts to the local orphanage, and Juliet is a newly employed nun working at said orphanage. However, by night, they are Masked Man M and Lady S, popular professional wrestlers. Kick-Heart tells the story of what happens when this dynamic pair meet in the ring, the only place where they can express their hidden desires. By day, Romeo Maki is a respectable man who loves bringing gifts to the local orphanage, and Juliet is a newly employed nun working at said orphanage. However, by night, they are Masked Man M and Lady S, popular professional wrestlers. Kick-Heart tells the story of what happens when this dynamic pair meet in the ring, the only place where they can express their hidden desires.