Recently, a sound that activates the human body has been developed in top-secret. On a trial basis, the government decided to play this sound in an elementary school's public address system. Girls are growing taller and taller every day, in both height and ability! Boys who were strong are now too weak. Boys are like shorties in the eyes of girls who have become tall, leggy, and taller. A 3D work for those who love real GTS and reversal of positions!(Episodic story) contents: 88 pages(pdf, jpg, mp4) The story in the link below is available for free. Please refer to them if you are considering purchasing. https://girlgrowthclub.booth.pm/items/6548112 Click here for a list of all stories. https://girlgrowthclub.booth.pm/item_lists/8plT1zo8