Titled Sunset Blue, it will be available in two versions. Both will feature the title track and the B-side bouquet, which is a wedding song guitarist Nao wrote for his friend. The third track will differ depending on the edition. Type A will feature a re-recorded version of Heaven, while Type B will have the same for Natsu ichizu.
The video for Sakura Underground from their 2016 album Kaikou can be viewed below.