http://www.dlsite.com/maniax/work/=/product_id/RJ043741.html

Girl with a mysterious atmosphere, "Yuragi"
And the boy with "Yuragi",
That otokonoko and the Gymnastics Department Manager,
Had SM play dressed in girls' leotards,
While peeping, he masturbated.
One day, he was found by the teacher and staff of the woman's gymnastics department.

"I'll grant your wish."

The boy's wish was to become a masochist slave.
With Yuragi and the gymnastics staff, his mind and body would take a journey through training,
He would be transformed into a shemale slave...

Boy before becoming shemal
(Anal sex)
(Remote controlled anal vibrator torture)
(Forced outdoor exposure)

Boy during shemale transition
(Footjob and face-sitting torture)
(Forced outdoor exposure)
(Wearing leotard at school)
(Confession and masturbate for classmates)

Boy after becoming shemale
(Penis piercing)
(Body tattoos and graffiti)
(Sex with men)
(Human toilet)

The only problem with mooonrevenge is they cut when it started came to best part.
superb upload anyway

Base +6