Fish

Vol.1 Chapter 6: Scar
Vol.1 Chapter 5: Something Good
Vol.2 Chapter 7: Newcomer
Vol.1 Chapter 5: Something Good
Vol.2 Chapter 7: Newcomer
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.