The search for the reveals more about the fandom than the game. It is a testament to how fans fill gaps in lore. Square Enix never officially released a weapon called the "Large Instrument." However, through the lens of Ever Crisis (the Yulan blade), cut content (the War Instruments), and fan art (the sonic gong), a clear image emerges.

"Ready for the resonance check?" her mentor called out from the observation balcony.

series of large language models and associated research involving large-scale instruments or simulations developed by Renmin University of China (RUC)