Ai ga Aru kara Osu!

Touma, heir to the Hyuga Group, is known for his reckless behavior, including fighting street thugs and pursuing romantic interests. His life takes an unexpected turn when his father appoints a new bodyguard. The bodyguard vows complete loyalty, promising to sacrifice everything for Touma's safety. However, this declaration raises questions about the bodyguard's true intentions and hidden past.