A world-renowned violinist as well as a University student, who sometimes travels abroad from Japan, and Akihiko's classmate since high school days, on-again-off-again boyfriend and roomate. Ugetsu is very intelligent and a prodigy violinist. He is generally a cheerful and friendly person being warm and affectionate towards others. He is very sharp about other people‘s feelings, very emotional and capable of overwhelming feelings, but he does not know how to express them.