In 2026, the anniversary year marking the 40th anniversary of Minayo Watanabe's solo debut begins. The special 8cm CD single "GOOD DAY!!" is released on July 7, Short-Sleeve CD Day. Her first new song release in five years. It contains two songs: "GOOD DAY!!" and a self-cover of "Usagi no Mimi." Because there is someone to support, today is another day worth living. Whether on a discouraging day or an ordinary morning, the world changes simply through the feeling of loving something. Minayo Watanabe's new song for the 40th anniversary of her solo debut, "GOOD DAY!!," is a song about the feelings of devoted fans. The lyrics were written by her son, Aiya Yajima. These are words that only someone who has closely watched his mother being loved by fans could write. Just I need you. Because I love you. Every day is a GOOD DAY!! This anniversary song is filled with those feelings and makes listeners want to sing and dance along. The coupling track is a self-cover of "Usagi no Mimi," whose catchy appeal resonates especially well in the current era.