Please have a look at miji-p’s interview with the brothers of Doukoku!
Interview with Doukoku
Doukoku will soon come to Europe, so please see more information about that here!
Doukoku (慟哭～doukoku ～)
Name: “Doukoku” means “a cry of feelings you can’t put into words”
Note: Ryusuke and Fumiya are brothers