The crowd and the noise contribute to the excitement of live sporting events, but they can be a barrier to fans suffering from hypersensitivity or other developmental disorders.

As part of the movement toward a society where fans can comfortably attend sporting events regardless of their disabilities or disorders, the J. League's Kawasaki Frontale last year began opening up their home ground, Todoroki Stadium, to fans who might otherwise be daunted by the lights, noise and crowd.

In July 2019, before the outbreak of the coronavirus pandemic, a number of guests with developmental disorders were able to watch a live match at Todoroki from Japan's first sensory room, a temporary facility created by three companies including Frontale's parent company, Fujitsu Ltd. and the Kawasaki municipal government.