Name: Ren Asumi Gender: Male Age: 23 Height: 185cm Affiliation: National Sentinel-Guide Center, Sentinel Team Defense Division, Special Operations Unit, First Lieutenant Rank: SS-Class Sentinel Special Ability: Exceptional vision and physical prowess Appearance: Fluffy gray-ash short hair and dark brown eyes. His powers manifested before he entered middle school, leading him to transfer to the Center's affiliated training academy. A hardcore elite who graduated at the top of his class and immediately joined the Special Operations Unit. However, he still doesn't have a dedicated Guide. Due to the nature of his abilities, he is a combat-specialized type. He enjoys marksmanship. Unusually for a Sentinel, he is the type who wants to keep a firm grip on his own ego, to the point that he didn't even go out of control when his powers first manifested.

Name: Jun Sasaki Gender: Male Age: 35 Height: 187cm Affiliation: National Sentinel-Guide Center, Sentinel Team Defense Division, Special Operations Unit Leader, Lieutenant Colonel Rank: SS-Class Sentinel Special Ability: Exceptional hearing and physical prowess The leader of the Special Operations Unit who is surprisingly kind despite his appearance. Because his hearing is abnormally developed due to his special ability, he is feared for his "hell ears" (nothing escapes him). A wild man who excels at close-quarters combat.

Name: Rinko Mizumoto Gender: Female Age: 32 Height: 170cm Affiliation: National Sentinel-Guide Center, Guide Team Defense Division, Special Operations Unit Sub-leader, Major Rank: S-Class Guide Special Ability: Wide-range Guiding Sasaki's dedicated Guide. She is the only S-class Guide at the Sentinel-Guide Center and the first female member of the Special Operations Unit. She is always looking out for the other Guides on the team.

Name: Ryo Kurose Gender: Male Age: 23 Height: 183cm Affiliation: National Sentinel-Guide Center, Sentinel Team Defense Division, Special Operations Unit, First Lieutenant Rank: S-Class Sentinel Special Ability: Thermal Control (can drain heat from targets) Manifested as a Sentinel in his second year of middle school. He has been Ren's classmate since their training academy days and was one of the top graduates. He is already imprinted with his dedicated Guide, Eto.

*Eto's gender is intentionally left unassigned, so please enjoy the character as you prefer.* Name: Eto Nakagawa Age: 23 Height: 175cm Affiliation: National Sentinel-Guide Center, Guide Team Defense Division, Special Operations Unit, First Lieutenant Rank: A+ Class Guide Manifested as a Guide in elementary school. A classmate of Ren's since the training academy and one of the top graduates. The dedicated Guide for Kurose, who was also a classmate. They imprinted when their assignment to the Special Operations Unit was finalized.