Arisugawa Ren tte Honto wa Onna Nanda yo ne.

A secret that could shake the entire entertainment industry— This sweet and innocent rom-com is a long-time bestseller! Kyouhei's one and only claim to fame? Being cousins with Ren Arisugawa, an ultra-popular male idol. The two haven’t seen each other since they were kids, but out of the blue, Ren suddenly shows up to crash at Kyouhei’s rundown apartment. But when Kyouhei playfully tries to sneak a peek while Ren’s changing, he makes a shocking discovery! Ren is actually a girl in disguise! Now holding a scandalous secret that could rock the showbiz world, Kyohei finds himself forced into becoming Ren’s personal assistant to keep up the act…! Caught in a world of secrets and scandals, can the two keep their forbidden relationship under wraps in the wild world of showbiz? (Source: Official Site)