Kanjani8 to release the 45th single! The title song is featured as the main theme song for the TV drama series "Shitteru Wife" starring Tadayoshi Okura.

This edition includes a bonus DVD with special contents for Valentine's day. Comes with "Sweet & Bitter." Also comes with a silicone mold to make chocolate.

Features jacket with a special feature (Aurora Reflection), which glows in aurora colors when photographed with a smartphone or other device with a flash function, and the way it glows changes depending on the angle and lighting (system requirements unknown).

This single is compatible with "Kanjani8 App" (system requirements unknown). You can enjoy the same contents of the single on your smartphone or tablet. *App expiration date: February 10, 2022.

The cover artworks corresponding to all the editions are different from each other.