Framed Knight Lean's NTR Crusade

The protagonist is given the mission to destroy a magic stone that can make people “obey” him, and he heads to three locations with his female knight lover.
The female knight disguises herself as a nun and a maid to infiltrate the locations, while the protagonist ventures into the dungeons.
The protagonist is forced to choose between checking on his heroine or diligently conquering the dungeons.
Failure to conquer the dungeons within the deadline will result in serious consequences.

Takuro Hayami transfers to the previously all-girl university of St. Arcadia, and his once-normal life immediately takes a troublesome turn. After his innocence is stripped away by strange dorm mates, a nagging two-faced friend, a nymphomaniac teacher and several corrupted sports clubs he fears that things can't get any worse. That is, until he meets the sadistic heiress Leona Morimoto...

Will he fall pray to Leona and her perverted minions?

Takuro Hayami transfers to the previously all-girl university of St. Arcadia, and his once-normal life immediately takes a troublesome turn.
After his innocence is stripped away by strange dorm mates, a nagging two-faced friend, a nymphomaniac teacher and several corrupted sports clubs he fears that things can’t get any worse.
That is, until he meets the sadistic heiress Leona Morimoto…

Diana, the second daughter of the prestigious noble Ashleigh family—renowned for producing exceptional knights for generations—was raised in comfort and protected as a proper sheltered young lady. However, after her elder sister, the female knight Luna Ashleigh, suddenly ran away and went missing, their family was scorned as a “disgraced bloodline with a runaway,” and their influence within the Imperial Army declined day by day, leading to their fall from grace. Watching her father, Robert Ashleigh—commander of the Imperial Army’s knight order—suffer in silence and grow thinner each day, Diana, deeply loving her father, began wondering if there was anything she could do for her family, and for him most of all. While struggling with these thoughts, she learned of “adventurers” and the “Adventurer’s Guild,” and resolved to become one herself, without telling her father. Thus begins Diana’s journey, where many encounters, partings, and a harsh destiny await her―――

A simulation game where you seduce married women and their daughters!
Use a mysterious app installed on your smartphone to corrupt the hearts of the heroines!
This game features pure heroines who gradually become accustomed to erotic activities and succumb to pleasure.
This is a seduction simulation game that maximizes the gradual corruption of the heroines.