A collaboration between the classic humidity regulator "Moist Regard" and "Ao no Orchestra"! Humidity regulator for musical instruments, violin-shaped. ・Features the iconic "Ichion Ichie" chant, with the main character and other orchestra members forming a circle and giving it their all! ・Maintains the humidity inside each instrument case at 40-60% for a long period (approximately 2 years from opening). ・The sheet's raw materials are water-absorbent polymer and urethane resin. By using cutting-edge technology to reduce the particle size of the polymer to 0.5µ, the overall surface area of the particles is increased, enhancing the moisture absorption and release effect. ・Prevents cracking and warping of instruments due to dryness inside the instrument case, and helps with the adjustment and maintenance of pegs and bow hair.