Most people signing each other's t-shirts simultaneously

The most people signing each other's t-shirts simultaneously is 919, and was achieved by Y's Men International Asia Area Japan-West Region Kyoto District (Japan) at Kyoto Sanjo Shopping Street in Kyoto, Kyoto, Japan, on 27 October 2019.

This attempt was made not only to advertise the company's business to the locals but also to share what the company has been doing for the environment with them.