Shiro’s family may run a love hotel, but he always has his nose buried in a book - it’s the only way he’ll get into a top-notch university! So how exactly did he end up getting close to a cocky, carefree adult film director? And why can’t he stop thinking about him? Castle Mango gives you the key to an exciting world of family secrets, surprise friendships…and first love! What could a quiet student and a purveyor of porn possibly have in common? And just how long will it take for a rookie romantic to learn the ropes?