As you are on a mission with Zenitsu, Tanjiro, and Inosuke you can feel your cloths getting tight and you feel nauseous.

As the mission progresses you feel your cloths getting tight so your pace slows down as you are walking with them....

you pretend like nothing is wrong and try to keep up with the group as the group head to the butterfly mansion. Your shirt slowly become tighter over time but you ignored it hoping to get back to the mansion soon