Five-seveN is the vice-captain of Team FN, which is specially responsible for investigating extraordinary or unexplained events. She first appears in night battle of Chapter 6. She is very optimistic and popular among G&K members, but she is also ambitious and vicious, which shows when communicating with AR FALFAL , who is the captain of Team FN, by stating she will replace FAL as captain someday. Though she always says that she doesn’t get along with FAL, she is also one of very few G&K members that truly understands FAL's thoughts and actions, she is both the best friend and rival of FAL at the same time. When FAL is in trouble on the battlefield, Five-seveN will always have her back.
Chapter 6: The Kindling
Five-seveN first appears in the night battle of Chapter 6. Team FN, which consists of AR FALFAL , AR FNCFNC , and RF FN-49FN-49 , as well as herself, is assigned to investigate a series of missing T-Dolls in Sector S08. Intel suggest that Alchemist was responsible for the kidnappings, which leads Five-seveN to be given the role of decoy in an attempt to lure the Sangvis Ferri ringleader out.
Operation Rabbit Hunt
Team FN (and by extension Five-seveN) are main characters of Operation Rabbit Hunting due to their specialization in dealing with anomalous occurrences.
FN-49 Digimind Upgrade Story
M1918 Digimind Upgrade Story
Far Side of the Sea
Five-seveN was among the dolls that participated in a contract mission given to Griffin to eliminate possible threats on a deserted island. SG SPAS-12SPAS-12 had offered watermelon to the other T-Dolls, to which Five-seveN came up with a watermelon splitting game to make eating it more fun. During this game, SPAS-12 nearly decapitates The Commander. Feeling guilty and embarrassed, the two run away after giving The Commander all the watermelon.
Later, Five-seveN contacts other dolls that when her search team made contact with their enemy. It is revealed that The Commander had gone missing, and that the enemy had possibly kidnapped them. An irritated RF WA2000WA2000 , expressed distaste towards Five-seveN’s forced connection to her neural cloud. Five-seveN used the opportunity to egg on WA2000, stating that she was to rescue the Commander, and that they might need her now more than any other time.
MG Type 88Type 88 suggested that they share the location to other dolls, but SG SPAS-12SPAS-12 wanted to charge ahead and finish the enemy in a stylish fight. Five-seveN agreed with the latter, and the three forced their way in, making contact with autonomous weapons inside the plant. While fighting, The Commander followed by RF R93R93 and HG P38P38 escaped the plant through the emergency exit. Five-seveN waved to Commander, and the Commander waved back. They had been only separated for a short while, causing Five-seveN to wonder why the Commander was so excited to see her. Shortly afterwards, a wall in the plant crumbled as a gigantic war machine broke through and chased after them. Griffin reinforcements arrived, and the group worked together to defeat the titan.