A boy who literally crystallizes under stress builds a fake personality to hide it. His geology teacher who collects stones notices him anyway. The romance that blooms is tender precisely because it starts with someone seeing through the performance to the fracture underneath.
Ayumu Banri has a problem. Anxiety turns his body to stone, creeping across his skin whenever stress builds up. After flunking a year, he decides to reinvent himself, adopting a trendy look and obsessively tracking social trends to finally belong. The mask works until his geology teacher Kouya Onihara notices something others miss: beauty in Ayumu's crystalline curse. Unlike classmates who'd recoil, Kouya sees something precious in the stone formations spreading across Ayumu's skin. The teacher's acceptance shatters the careful facade Ayumu has constructed. Drawn to someone who appreciates what he's been hiding, Ayumu finds himself questioning which version of himself is real: the manufactured "sparkly youth" he's been performing, or the vulnerable person beneath. This OVA blends gentle romance with the peculiar intimacy of being truly seen. It's for anyone who's felt pressure to be someone else, and anyone who believes that broken parts of ourselves can be beautiful to the right person.