Okada Izou, Sakamoto Ryōma, Oryou, and Ritsuka Fujimaru from Fate/Grand Order HD Wallpaper

Four characters are gathered in a dimly lit room with traditional Japanese sliding doors. A woman with long black hair sits on the left, facing a man in a white uniform. Another man holds a book and looks towards the right, where a man with yellow eyes and dark hair leans his head on his hand.