From DrCoke at MangaHelpers:
Kaoru Inoue had suffered a tragedy when his parents were killed by a knife-wielding man in the political rally of Assemblyman Yūzō Asada in Tokyo when he was 6. Because of this, all of his senses have been improved with the ability to detect anything in his surroundings. Veteran SP officer Soichiro Ogata recruits him from SP training after being impressed with his training under Section 4 of the SP division. Inoue works with Eri Sasamoto, one of the few women serving in the division. Another officer is Takafumi Yamamoto, who is the only known SP officer to have MMA experience with a preference to use the 7:3 hairstyle ratio. Mitsuo Ishida is the only known SP officer in the section who had been previously married. Together, these men and women work in unison to protect the VIPs assigned to them from being killed by assassins.

An alternative story to the TV drama SP series.