Within the confines of Saint Angraecum Academy, a renowned school for young women hidden amidst towering forest walls, Suoh Shirahane ponders the permissibility of falling for a fellow student. Plagued by her reserved nature and enigmatic background, Suoh embarks on her high school journey with the aspiration of forging enduring connections through the Amitié program. Amidst the enigmatic ambiance of the academy, shrouded in occult enigmas and unexplained vanishings of students, Suoh grapples with academic challenges while unraveling the mysteries that surround her. As the seasons shift and friendships bloom, Suoh finds herself entangled in a profound love that transcends mere affection, prompting her to contemplate a crucial choice that will shape her path.