Moriya earned his living by working as a cleaner. His only hobby was to listen to ASMR deliveries. Akiha (AKIHA) is a female distributor. She hid her face and delivered various sounds such as her voice, the sound of eating, and the sound of touching things. Moriya was impressed by Akiha's delivery. Moriya was addicted to Akiha's delivery. Moriya was addicted to Akiha's videos. Moriya spent his days looking forward to watching her ASMR videos. One day, Akiha was streaming a live video of her walking in a public restroom wearing high heels. Moriya, who was watching the video, could not hide his surprise. Because that public restroom was the place where Moriya always cleans. Moriya was always cleaning that public restroom. Strangers, men and women, connected by sound. They cannot see each other's faces and do not know each other's identity. What fate awaits them?