I'm guessing this is one of those "Change happens before the story" tgs, since otherwise the content isn't any different from a normal hentai.

Base +7, Anomalious +7, Dalekthy -3, qrsWtuv +7, observer1980 +21, Kaosumx +18, yuriftw +9, Blaze23123 +6, Captn.Zero +5, jaylou1010 +8, Sushilicious +31, Zero Angel +36, Xcel +8, and 11 more...

Deiser
you hit it~

Base +7, observer1980 +22, Quasi-Evil_Overlord +6

Or it happens during the story, just isn't shown in pictures. Lots of those too(often feels they were just to lazy to create a 'male version' of a character.) Last 'tg game' I played the main character isn't shown, but you hear 'his' voice, then he finally gets a model and shows up after the change, XD.

Base +6, observer1980 +22, ensane +9, Quasi-Evil_Overlord +6

English DLSite:
http://www.dlsite.com/ecchi-eng/work/=/product_id/RE094086.

[Pinpoint/Kingpin] Glory of the Self-Styled Diehard Bitch: From Dating to Mating

Kaoru was a stalwart young man dedicated to zest, justice, passion and awesomeness...
He defended the weak and challenged the strong and hated villains.
One day while trying to save a child from the street, he was struck by a vehicle...
And woke up in a girl's body. "What the..."
Her massive breasts, perky cute ponytail and ripe peach ass made Kaoru a sex magnet.
Now Kaoru is discovering his femininity side from the outside in...

Official Site:
http://pin-point.biz/11_orebitch/index.html

Getchu:
http://www.getchu.com/soft.phtml?id=740605

Base +6, Myzer +8, Quasi-Evil_Overlord +6

pretty cool

Base +1, Lus De Blois -8, mnbvcxz11 +6

(同人ゲームCG) [120420] [ピンポイント キングピン] 自称硬派のオレが女になったら思いのほかすげぇビッチだった(∇＼)キャッ～援交から肉便器まで～

Base +6, Lus De Blois -8, mnbvcxz11 +6

There is a version on Amazon that appears to be a novel. Could someone explain what the difference is?

Base +25, mnbvcxz11 +6

Why is the male:gender bender tag vetoed here? The plot involves a guy becoming a girl.

Base +6, Geno0042 +6, DarioEmpio +7, Jalis +7, mnbvcxz11 +7

I think they also took the visual novel and turned it into a 256 page digital light novel available at retailers like Amazon.

Base +25