True Love's First Kiss

On Valentine's Day, Nico's friends decide to help him with his love-life, with Lou's magic. A potion that turns him into a merman, only to be broken by true love's first kiss. The problem? Hades also decided to help, in his own way, by kidnapping Percy as a present to Nico. Now Nico is stuck in the lake as a merman and Percy is stuck in the underworld... Nico/Percy slash Nicercy