Nyotai Kyouran -Haze Otome-

Experience the bawdy corpulence and unbridled lust of a feminized morphic girl in this crazy adventure game!
VALKYRIA presents another psychotic erotic creation! Cumtastic insanity for all players neck deep in perversity! Toy with a sexual woman... from within!

When one girl's beloved boy met with an accident, she accepted his special blood type into her body... but due to a factor from long ago, this triggers a ridiculous body transformation! Now, for the young girl's sake, and for her lover's sake, she must succumb to the illegal experimentations of a genius doctor!
Insane medical erotica, body transformation, dysmorphia, extreme hentai...! Gaping vagina, enormo-titties, testicle sh*t, nipple sex, berserk... Pornographic delusion, all within one changing girl! How her madness will develop is completely in your hands!

[Taken from English DLsite]