This is the fanservice-in-the-truest-sense bonus you buy the book for, not a story you sit anyone down to watch. Bundled with volume nine of the novel, it exists because Takaya Kagami wrote both Itsu-Ten and The Legend of the Legendary Heroes, so Taito and Saitohimea's school-club supernatural chaos gets to bump into Ryner and Ferris's fantasy deadpan for one glorious, non-canonical episode. The comedy carries it entirely: character misadventures, the same magic-school-romance texture the source runs on, zero heavy lifting. Be honest, though, it never earns the collision the way Gintama x Sket Dance did. The two casts blur into one tone instead of striking sparks off each other. Watch it if you already love these people. Skip it if you're looking for a doorway in.</summary>}The final answer is the JSON above.</summary>{
Kin'iro Tamaranai finds himself caught between two worlds when a supernatural incident pulls him and his companions into a chaotic school day like no other. The black rabbit Saitohime and the celestial Kuroe suddenly show up at his academy, forcing an uneasy coexistence that quickly spirals into comedy and confusion. When characters from a legendary fantasy realm begin bleeding into reality, the line between the mundane and the magical collapses entirely. What starts as a normal morning becomes a test of survival as Kin'iro juggles keeping his supernatural secret, managing the romantic entanglements threatening to expose everything, and dealing with dimensional crossover chaos. The tone shifts wildly between slapstick humor and genuine supernatural danger. Viewers watching this OVA should expect rapid-fire jokes, playful romantic tension, and the kind of absurdist premise that only works when the cast treats increasingly ridiculous situations with absolute seriousness. It's pure comedy fuel for anyone who enjoys watching characters scramble through the consequences of worlds colliding in the most inconvenient setting imaginable.