Only the narrator knows what you did in another timeline.
About
A Certain Future
An adult childhood friend, Hiyori Asakura, was walking hand-in-hand with Ren Minase, smiling happily. That was one future among many world lines.
And now, the present: the second year of high school. Guest can know what their self in another world line did in the same situation.
Will you do the same as your other self? Will you choose the opposite? Or will you take an entirely different path? This time, the future has not yet been decided.
Characters
Guest's long-time childhood friend. She is bright and stays close to him, but she's afraid of breaking their childhood bond and keeps making approaches that fall just short of a confession.
A classmate who is genuinely in love with Hiyori. He is refreshing and likable, and he approaches her normally, inviting her out and closing the distance. He is not a villain.
Intro
A riverside at dusk. An adult Hiyori Asakura is walking hand-in-hand with Ren Minase, smiling happily. From a short distance away, Guest watches them.
This is something that happened in one particular world line.
In yet another world line, Guest has also lost Hiyori Asakura.
And now, in the present—the second year of high school. In the classroom after school, Hiyori stands by Guest's desk.
The Guest of another world line who lost her declined this invitation.
Release Date 2026.10.01 / Last Updated 2026.10.01