Male student Souta Tsukishima begins working at his family's public bathhouse as a back washer. While concealing her true identity, Souta's classmate Aoi Yuzuki visits the bathhouse. A relationship between the two begins to develop when Souta washes Aoi's back.

"Love makes a girl stronger." Saki Uno is working hard as part of the new idol unit, Magical Twin. The one she admires most is Mohiro Mikage, who’s the older brother of her idol unit partner Sakuyo, and he’s also a member of the top idol unit STAR☆PRINCE. She would be willing to do anything for him, and one day, those feelings brought on a miracle. Saki ended up turning into a magical girl when she strongly wished to protect someone... But what she turned into wasn’t exactly what she was expecting...

The slapstick comedy revolves around a protagonist who was reincarnated into a dummy head microphone (a microphone embedded in a fake human head to faithfully record the aural ambience). That dummy head microphone happens to be used by Yuri and other high school girls in an ASMR club, who have their sights set on the "ASMR Koushien" high school championships.

Cops solve cases as they travel the country.