Blue Birthday (2023)

No Regrets (1x9)

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The past has changed, and when Karin returns to the present, Jun is there. Karin is happy by his side, but one day she is suddenly attacked by Saki, who has been released from prison. Saki desperately searches for the last photo so that she can go back in time but as she burns it, Karin, wounded and bloodied, clings to her leg. Thus, the two go back one last time.