The Daughter of Twenty Faces

Chizuko Mikano is living with her aunt and uncle who are slowly poisoning her. However, her sharp intuition allows her survive long enough for the thief Twenty Faces, by chance there to steal the Anastasia Ruby, takes her away to join his band of thieves. They escape from the police in a car and are then ambushed by Tiger, who they shake off by escaping in the airship and heading toward an island.

Chizuko, now nicknamed "Chiko", is introduced to the rest of thieves, who gradually warm up to her and her determination not to be a hinderance. The group is forced to abandon when the police, who were following the airship, arrive at the island. They flee to an Asian country and are betrayed by Chen, a man who sells information to thieves for money, but manage to escape with the treasure anyway. On the way back, Twenty Faces is shot and they are forced to take refuge in a woman's house until they can get a hold of the other members of the band. Chiko is left alone with Twenty Faces until Ken and Skipper get back. She discovers that the woman was planning on selling Twenty Faces to a group of bounty hunters and ultimately foil her plans, successfully returning to the base with the treasure.

Chiko helps out with the domestic chores of the thieves, including cooking meals. Twenty Faces arranges for the group to explore and recover something important from a sunken underwater fortress, only for the submarine captain to betray them. However, by overlooking Chiko, the captain and his crew find themselves at the mercy of Twenty Faces instead.

As the thieves continue to train Chiko in various skills relating to their line of work, Chiko has yet to participate in any missions. When Ken is injured, Chiko steps up, despite the reservation of some of the thieves, and successfully accomplishes her role in the theft, establishing herself as a member of the group and her new family.

Twenty Faces' group work as circus performers in a local town, with Chiko starring as tightrope walker Lily, as a cover to gather information and steal an artifact known as the Clock of the Magi. During Chiko's visits to the museum where the clock is contained, she meets and befriends a girl named Angie. During their last performance, the thieves go about stealing the clock while everyone is attending the circus.

The gang is on a train returning back to their hideout after successfully stealing the Clock of Magi. Tiger and his gang (including Angie who deceived Chiko into thinking she was her friend) all of Twenty Faces' gang is subsequently killed excluding Ken, Chiko, and Twenty Faces himself. In order to save Chiko from an explosion, Twenty Faces and Tiger supposedly die in an explosion. Ken runs off feeling betrayed, and Chiko is left in shock.