Fish

Vol.2 Chapter 7: Newcomer
Vol.1 Chapter 6: Scar
Vol.2 Chapter 8: Revenge
Vol.1 Chapter 6: Scar
Vol.2 Chapter 8: Revenge
Fish is the sequel to Pet, it picks where both the ending of Pet manga and anime left, and focuses on the future lives of the story's "pets", in particular Hiroki, Tsukasa and Satoru.