Ep. 11: Mariko, the true identity of No. 35, is released to retrieve Lucy while Nana senses her lethal intent.
Aired on October 3, 2004

11
Mariko is revealed to be the true identity of No. 35. Under supervision from staff at the facility, she is released as a last effort to retrieve Lucy. Nana senses Mariko's presence and her desire to kill her through their ability to locate each other. Mariko and Nana meet on a bridge on the shore and they battle. Kurama, who supposedly "had to leave", has joined Bando to kill Lucy on his own beyond the knowledge of Shirakawa and the staff.
Episodes
- Ep. 7 · Nana receives new limbs and money, then meets Mayu at the cemetery before returning to Kohta's home.
- Ep. 8 · Nana reveals her naivety while Mayu uncovers Lucy's true identity and Nyu's secret.
- Ep. 9 · Lucy's past with Kohta is revealed through a music box and a day at the zoo.
- Ep. 10 · Kurama's past reveals his connection to the diclonius project and Mariko's birth.
- Ep. 11 · Mariko, the true identity of No. 35, is released to retrieve Lucy while Nana senses her lethal intent.
- Ep. 12 · Kohta confronts Lucy's past revenge while Mariko and Bando target her.
- Ep. 13 · Mariko regains her vectors and confronts Lucy, leading to a tragic final encounter with her father Kurama.