If you're looking for manga similar to C-Blossom: Case 729, you might like these titles.
Memori Fujieda is not only a university student, he's also the pretty face of his brother's bodyguard company, taking on important cases with ease. But when the mysterious Yuuki Shin comes along, wishing to join the company, Memori finds himself with an unlikely partner – a partner with a dangerous, deadly secret...
Mahiro thought she was all alone in the world until her long-lost brother, Ren, and his handsome, mysterious friend showed up and turned everything upside down! Competent, determined and dangerous, the two men have vowed to protect the innocent girl from the ruthless Queen Phibula, who is hell-bent on seeing her dead. As Mahiro learns more about her forgotten past, she and her handsome bodyguards must face explosions, assassins, betrayal... and the promise of blossoming romance.
Karito Tate is a bodyguard who takes on various jobs to protect VIPs using martial arts, various firearms, or high-tech gadgets. He is not allowed to kill but only to protect with his right arm.
Quinta is an infamous grand witch who has lived over 300 years and is known for her cruelty and killing other witches. She's shrouded in mystery and secrets, but the truth is, she's actually only 16 years old. In an unexpected turn of events, Quinta becomes a bodyguard for Nestor Gilroy, a renowned professor with 5 PhDs, who is being hunted down for his unpublished research. Together, Nestor, Quinta, and her animal companion Feeyo embark on a journey in order to have Nestor's results published.
To pay off her foster father's debt, Gen Setsuka (Xuan Xue Ha) works as a bodyguard in the red light district. However, when she catches the interest of a dashing noble by the name of Kou Shiki (Hong Zhi Hui), her normal life is suddenly changed. He arbitrarily settles her father's debt and orders her in turn to work in the imperial harem. Her job was to be the bodyguard of the highest ranking imperial consort, a prime target for assassination. Though Setsuka is still doubtful of why he would extend his generosity to someone of such lowly status as herself, the contract is settled. Nevertheless, in the midst of her duties Setsuka finds that her past is tied to the imperial palace...
Hotel detective Doll is assigned to protect the president of the United States during his stay at the luxurious Sunrise Hotel. While assisting a hotel guest who has fallen ill, she discovers and kills an assassin, but something tells her the danger isn’t over yet…
Mahiru goes in search of her sister who has been missing for 2 years now and meets Yukito claiming to be a bodyguard and her proxy. He warns her that her sister is probably involved in something dangerous, but she can't give up. This choice forever changes her.
Japan's law enforcement has worsened, and bodyguards are a necessity in the new era. Asahi is employed as a bodyguard for Kisaragi Sakuya, the talented heir of a rich family. Asahi was brought up in downtown Tokyo, and she is very compassionate. But will she always be able to stand strong against the utterly cold Sakuya?