[TSF LAB (Umimoto Natsumi)] Ossan Ka Kusuri [RevMTL]

A nervous schoolgirl in a sailor uniform discovers a dark, viscous brew that seeps into her room, corrupting her body and awakening intense, novel sensations. As the mysterious liquid spreads, she experiences a dizzying transformation that heightens her pleasure, leading to frantic self‑exploration and a loss of conscious control. The story builds toward an explosive climax where her transformed form yields relentless, wet climax, captured in vivid, explicit panels.