Osananajimi
Description
Osananajimi (which is Japanese for "childhood friend") is a Japanese adult romance visual novel.
The player takes on the role of a man who finds an old photo of himself and his childhood friends along with the key to a time capsule while cleaning his room. While delving into those long-buried memories, the protagonist makes decisions which will determine which of the lovely girls that he spent his childhood with will follow him into the present as something more than just a friend.