5 Children

Name: Akihiko Isobe - The Leader/Serious One
Rank: ANBU Captain in Special Ops
Birthday: August 1st
Age: 16
Height: 5'7"
Weight: 130 lbs
Bio: Selected from a group of orphaned children along with four others to be trained rigorously and to become ANBU at a very young age. Was specifically selected for Special Ops when he was nine, became a Captain at 13, began dating Nanase Akagi (Kimiko Yūri) around 14, died when they were both sixteen.
Cause of Death: Murder

Name: Yoko Ringaku - The Level Head/Calm One
Rank: ANBU in Root (formerly) and the Undercover Unit (currently)
Birthday: November 28th
Age: 20
Height: 5'5"
Weight: 100 lbs
Bio: Selected from a group of orphaned children along with four others to be trained rigorously and to become ANBU at a very young age. Singled out by Danzō Shimura very early, never entered the Academy but reach ANBU when she was seven. Joined the Undercover Unit once Danzō's death was announced. Was involved with a yakuza and a jealous lover, one tried to poison and kill her she remains in long-term care at the Konoha Hospital in a comatose state.

Name: Eiko Miyamoto - The Fighter/Quirky One
Rank: ANBU in the Torture/Interrogation Unit
Birthday: February 10th
Age: 15
Height: 5'2"
Weight: 85 lbs
Bio: Selected from a group of orphaned children along with four others to be trained rigorously and to become ANBU at a very young age. Became an ANBU at eight and was taken in by Ibiki Morino at the torture unit. Lived a very zany and crazy life until she died on mission when she and the other orphans were only 15.
Cause of Death: Succumbed to injuries on the job

Name: Sachiko Okane (Nanase Akagi, Kimiko Yūri) - The Caretaker/Cute One
Rank: ANBU in the Undercover Unit
Birthday: February 14th
Age: 20
Height: 5'3"
Weight: 95 lbs
Bio: Selected from a group of orphaned children along with four others to be trained rigorously and to become ANBU at a very young age. By the time she entered the Academy a notorious ANBU Captain already had his sights set on her. Joined the Undercover Unit when she was eight. Began dating her close friend Akihiko Isobe when she was 14. Had a child when she was 19. Started dating Sasuke Uchiha at 20. She is the only one left of the five original orphans that is still alive/on active duty.

Name: Kazuhiko Endo - The Peacekeeper/Pretty One
Rank: ANBU in the Undercover Unit & Espionage Unit (both concurrently)
Birthday: March 21st
Age: 16
Height: 5'8"
Weight: 125 lbs
Bio: Selected from a group of orphaned children along with four others to be trained rigorously and to become ANBU at a very young age. The most talented of the 5-Ko, Kazuhiko purposefully held back in school and became an ANBU at nine under the watchful eye of Orochi Abe in the Undercover Unit. Simultaneously he operated in the Espionage Unit; the unit he was operating under when he was captured. Died when he and the orphans were 16.
Cause of Death: Killed himself when he realized he had been captured and there was no escape

Note: Kimiko wore a wig when she was Sachiko and Eiko dyed her hair a lot, she's originally a brunette. The picture is them in order, the first being Akihiko and the last being Kazuhiko.

End