Ore wo Mamoru to Chikatteyo

"Heartthrob idol Shiina Canan accidentally helps Masaomi Mouze; a man who collapsed in front of him. Mouze in a rush of gratefulness, kneels down and requests to "Return his gratitude". When Mouze's manly body and back tattoo caught Canan's eye, he offers Mouze to live with him as his bodyguard to return the favour. A dutiful sense of gratitude X A bitch hidden behind a heartthrob facade."

A dutiful sense of gratitude x A bitch hidden behind a heartthrob facade.
This is a dramatic story about two people with perfect physical attraction.