SGKI-101A Will the boys find out? A role-play health checkup with flat-chested sisters — even when their sensitive spots were touched, they tried to endure it…

The twin sisters of a traveling theater troupe, Yuna and Hinano, face an unexpected transfer destination: an all-boys school!? Competing for the troupe’s spotlight, they decide to go undercover in disguise. But what awaits them is a nonstop series of intense challenges! From changing clothes in the classroom to a school health check where they sneak in a remote device as part of the setup… thrilling and nerve-racking situations keep coming one after another!

During a chest exam, they insist, That’s just muscle! but their sensitive bodies can’t hide the truth, and before long, their secret is discovered by the male students…!? In a desperate crisis, they try to keep things quiet with a secret sisterly scheme to silence the situation. What will become of the two of them!?