Belonging to one of the most influential families in the underground mafia leads to glory and power. To be hidden from the world leaves you with no choice but to be brutal and ruthless to get to the top. Sapphire "Saph" Dawn's true identity has been kept a secret. Buong buhay niya ay isinantabi niya lang ang pagiging Tanaka— hanggang sa malagay ang buhay niya sa panganib. Kinailangan niyang pumasok sa Fukitsu Academy, a school for the elite, but also for the cruel and cold-blooded. With her existence revealed, Saph faces the trials and tribulations of being a hidden Tanaka. As she climbs her way to the top, the lies and betrayals at Fukitsu will never make her life the same way again.