After twenty-one-year-old Chiaki watches his boyfriend, Kuon, die in a tragic accident right before his eyes, he wishes desperately to go back and redo it all…and in a miraculous twist of fate, his wish is granted! Chiaki awakens to find himself flung ten years into the past, stuck in a child’s body and seeking a lover who doesn’t know him. None of that matters, though—as long as he has this chance, Chiaki is determined to reverse the impending tragedy, and he won’t stop until Kuon is safe by his side once more…