Based on the visual novel of the same name, Lemures Blue's 2am is about a boy named Aoi who meets his friend Hinata often under the same cherry tree. There's a rumour spreading around school about a white-haired ghost appearing at 2am and Aoi and Hinata decide to go to school during the night to look for that ghost. Aoi truly believes the ghost is Hinata, could it really be him?