When a runner is diagnosed with a disease that is going to shrink his penis, he begs his best friend to help him with the only non-drug treatment... a prostate massage. After refusing but agreeing to accompany him to a professional (Miss Aya, the best character in the manga), the best friend changes his mind when he learns the drugs would show up on a doping test. With no other options, they begin regular treatments.
And then fall in love and have proper sex like good BL boys.
Good potential for team switch if we ever got a sequel.
Shinyuu tte Soko Made Shinakucha Ikenai No?