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.

From the pages of Dali's child-rearing journal, as reported on by Henrique, it's a summary of the first six episodes of .

Third season of the Ketsuekigata-kun! series.

Second season of the Ketsuekigata-kun! series.