[Doujin Echigoya (Echigoya Takeru)] Onii-chan ni wa Sakaraenai! ~Namaiki na Otouto TS~ [GTF]

A bratty little brother's secret bedroom experiments finally catch up with him when he transforms into a voluptuous young woman with an enormous, jiggling bust—and his smug older brother immediately pieces together exactly what's been making all those noises behind his door. Cornered and flushed with heart-shaped pupils, she stammers out a plea to have sex with him, and her brand-new body is soon put through its paces with deep nakadashi, buzzing toys, and a relentless anal drilling that leaves her apologizing through the moans. Even when the transformation starts to turn back, there's no defying onii-chan—and from the way she keeps begging for more, she wouldn't have it any other way.