As their final summer in elementary school unfolds, four friends embark on a daring venture to a local graveyard to test their bravery. Amidst this, Haruka Kaminogi intervenes in Yuu Gotou's turbulent family situation, triggering a vision of blue snow and the sudden appearance of a mysterious silver-haired man. Subsequently, a similar inexplicable phenomenon grips the group at the graveyard, mistakingly thought to be ghosts. Little do they know, these apparitions are actually Dragon Soldiers from La'cryma, a parallel dimension, on a mission to secure the powerful