DSOD-030 | "Dick brain lol" I gave a futanari drug to a haughty bitch who looked down on me, and she became addicted to the pleasure of ejaculation she had never experienced before, turning into a big-breasted gal who thinks only with her dick. - Sarina Hyakunaga

Sarina is a "gal" who seems to do nothing but play around, yet she is actually a brilliant graduate student. Noguchi, a fellow grad student who ranks lower than her, is consumed by jealousy; he concocts a potion that causes a penis to sprout and tricks Sarina into drinking it. The next morning, Sarina panics to find a penis growing from her body. Her mind becomes obsessed with sex, and her body begins to throb with arousal...