Quagmire

S1 E12: When #35 gets tired of playing and is about to kill Nana, Kohta runs into the scene. Nana tries to save Kohta and falls into the ocean. The research worker gives orders to kill both Nyu and Kohta, but Nyu comes back to Lucy and saves themselves by repelling the gun bullets with her vectors. Lucy starts killing the officers and that bloody scene makes Kohta recall the sealed memory of his sister and father's murder by Lucy from his childhood. There, Bandoh appears looking for #35 and finds Lucy. Since he's been looking to get revenge on her, he starts shooting at her.