3girls, horror anime, intimate slice-of-yuri scene, old Japanese school classroom at twilight transformed into an otherworldly living space. Center: the transformed girl in her late teens, now wearing a flowing floor-length violet-purple cloak with a towering collar that shifts between crimson and cobalt in the dying orange light; her hair long with dual warm and cool sheen, eyes glowing faint magenta-violet, cheeks softly flushed, expression serene and content with a faint eerie calm, sitting cross-legged on a dusty teacher's desk. Left: the crimson-cloaked woman in her early twenties, long black hair, pale skin, deep crimson eyes, gentle eerie smile, leaning close with her chin resting on the girl's left shoulder, one pale hand draped over the girl's knee. Right: the cobalt-cloaked woman in her early twenties, long black hair with cool blue sheen, pale skin, deep cobalt-blue eyes, serene cold smile, leaning close with her temple pressed against the girl's right temple, slender fingers intertwined with the girl's right hand. All three faces eerily similar in pale unearthly beauty, like sisters bound by something deeper than blood. Scattered open old books with illegible crimson and cobalt text, floating violet paper lanterns casting soft warm-cold mixed glow, cracked blackboard covered in overlapping red and blue chalk scribbles that seem to shift. Dust motes dancing in amber twilight beams through broken windows. Painterly digital style, loose sketch-like linework, visible brush texture, deep shadows, muted eerie warm color palette, heavy horror atmosphere, domestic intimacy within a sealed cursed sanctuary, doomed tranquility, melancholic beauty, the three have become a family.