Mai Kuraki brings the 41st single. The title track is the main theme song for the theatrical anime feature "Detective Conan: Crimson Love Letter." This is the 21st collaborative work between Mai Kuraki and "Detective Conan (Case Closed)" series. This edition includes a bonus track "Time after time - Hana Mau Machi de -" (TIME TRAVEL PARADOX REMIX). Comes with a large sticker featuring Mai Kuraki.