Rouge Secret Service

Kakan, a hugely popular model, receives death threats after being chosen to appear in an advertisement for a high-end lipstick brand. To generate publicity, her agency decides to insure Kakan's lips for 300 million yen and assign a bodyguard to her 24/7. The bodyguard, Rion, is a straitlaced man who shows no interest in Kakan, and she resents him...

"If, by any chance, I lose control, I might damage your lips or mouth..." Thus begins a secret service where they spend 24 hours together, but kissing is forbidden.