You, lewd voice, refrain from self-restraint. In a parking lot...in a taxi...in a manga cafe with a female customer next door...in a public toilet...the face is calm, but the lower body is repeatedly tortured by violent pistons. Chika Arimura desperately tries to silence her voice by biting her lip and sometimes even sticking her finger into her mouth. The woman tries to hold back her voice, but the sound of Irama and the sound of the piston throws her into a state of panic.