妻・めぐるが殺害される運命を止め、ようやく平穏が訪れた夫婦に待望の娘・はるかが誕生する。しかし、愛しい我が子にも“過去に戻る病”の遺伝のきざしが──。ある夜、突然おかしな言動を始めるはるか。しかも、来客の直前に「ピンポンなった」と予言する。まさか、この子は別の時間からタイムリープしてきたのか!? ついにやってきてしまった病気について話さなければならない日。はるかをめぐり、3人の未来へとつなぐアフターストーリー。
After successfully preventing the tragic fate of his wife, Meguru, peace finally returns to the couple's lives as they welcome their long-awaited daughter, Haruka. However, signs appear suggesting that the beloved child has inherited the mysterious "past-rebounding disease." One evening, Haruka suddenly begins acting strangely, even predicting "the doorbell rang" right before a visitor arrives. Could it be that she has time-leaped from a different point in time? The day they must finally confront and discuss the disease has arrived. This is the after-story that connects the three of them toward their future.
