Taken from Baka-updates: An anthology of oneshots. Story 1: Promise by NISHI Keiko Story 2: They were Eleven by HAGIO Moto Story 3: The Changeling by SATO Shio Story 4: Since You've Been Gone by NISHI Keiko The two stories by NISHI Keiko were also published as a separate book in English called "Promise." Those stories were originally taken from "Mizu ga Kooru ni Naru Toki."