DMM/Fanza: http://www.dmm.co.jp/dc/doujin/-/detail/=/cid=d_163304

"In the mirror, the Strongest Hero of Justice is now the Weakest Monster Girl"

Synopsis
===
The villains created a mirror world where everything is reversed. They proceed to trick the strongest heroes (power rangers thing) to pass through the mirror, which then turns them into the weakest evil minion underlings.

The imposing red ranger with a strong sense of morality is turned into a short, thicc, twin-tailed girl with no morals. Brave yellow ranger is turned into a timid, big-breasted girl. The smart blue ranger is turned into a dumb gyaru. And everyone is now in a "lowest level minion squad" under the main villian instead of being the strongest justice team.

Cue gradual mental changes throughout (forced action, forced speech, memory rewrite/suppression) + character synchronization. We're told that if they fully change into the reversed roles, then even if they go back through the mirror, their changes would persist. At the end we see each hero mentally fighting (quite unsuccessfully) with their new setting, getting more turned on the more they act by their new role.

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Metadata stripped. Bonus character design and cover design pictures at the end of the gallery.

Ooh, this is setup is quite nice, especially with all the mental changes, I'd almost believe it's a tsf no f work... (It's not actually)
Would have loved to see a just biiit more though... Like when the heroes finally end up being fully corrupted.
But I guess maybe they're saving that for the future...

Base +11, liberius +6, banjomarx +8

所以不要随便跑去不明能力敌人去的地方

Base +6

就这还叫最强？
牛郎团表示你们弱爆了好吗？

Base +6

hope this gets translated this looks hot

Base +7

English when? And who do we need to throw money at for English?

And is this on DLsite?

Base +7

兄啊，牛郎团进镜子那会也没变成大莱绝对服从战斗员妹子……
等等，我好像可以

Base +6, Karl12138 +6