Mafuyu Satou, Ritsuka Uenoyama, Haruki Nakayama, and Akihiko Kaji from Given HD Wallpaper

Four young men stand in front of a cityscape with a pink sky. The man on the far left has blue hair and his arms are crossed. The second man from the left has red hair and is holding a red guitar. The third man from the left has blonde hair and is posing with his hand behind his head. The man on the far right has blonde hair tied back and is looking to the side.