Mawaru Sekai no Kimi to Boku(NAONO Bohra)

When they were very young, Keito and Tomoya made a promise to be together forever, but after Tomoya disappeared one morning, Keito lost his faith in people. Years later in high school, Tomoya makes a sudden return, but now Keito\\\'s no longer a cute little kid Tomoya seems to have forgotten who he is!