Next Knight Kuon's Chroncicles of Debauchery

The protagonist and Artel have had feelings for each other since they were young, but Artel leaves without expressing her feelings in order to join the knight order, which was her dream.
However, for a certain reason, Artel, the childhood friend, returns to the protagonist’s training school as a teacher.

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―――

Young female knight Reisha of the royal capital Near Lake was lamenting.
The sudden death of the former king had caused political turmoil, the current reigning princess who succeeded the throne lacked convincing authority, the rapid increase of monster nests threatening the royal capital’s territory, and her own immaturity as a knight, which was not enough to serve the motherland she had sworn loyalty to.
Amidst such chaos, an order was bestowed upon Reisha by the king.
It was a quest to search for the now lost holy sword “Sword of Dawn,” passed down in the legends of the royal capital──.

You'll be playing as a nerd named Dick. One day, you find out that an insanely gorgeous married woman has moved in next door! As a small-time nobody, you hardly can hold it back.
 
You’ll be picking up all kinds of skills and gear from a shady online shop to get closer and closer to this married woman next door. Along the way, you’ll be looking for the perfect chance to satisfy her deep, lonely cravings!
 
Break into her house to set up hidden cameras, then head back home to enjoy a peek into her secret life.
 
Swipe some valuable items from this easygoing, carefree lady. You can also try your hand at lock-picking to uncover more valuable treasures—or even snag a few of her personal items for your own collection.
 
Add some 'special ingredients' to her cup, enjoy some wild fun with her all around the house when the time has come.
 
Level up your skills, meet other women through a dating app, and explore steamy connections as you fulfill their longing for companionship.

The S-U-P-E-R erotic + action RPG! Female knight 16bit gaming meets X-rated glory!
There's tentacles! There's b*stiality! There's hardcore! There's lesbians! There's creampies!
Gasp at her bondage. Revel at her onani. Cum to her pregnancy.

Pegasus Knight was deceived by the leader of Paipan Village and tumbled into the den of lust monsters.
Discover new skills as you level up, use the Gargoyle Shop, plunder the dungeon for dropped treasure,
equip powerful gear! Collect magic scrolls and useful herbs, unravel the dungeon mystery,
and escape to the world's surface.

Monsters dash the clothes right off Pegasus's cute body, and have loads of naughty attacks.
Scenes that you see once will be saved in the Ecchi Archive, and can be rewatched anytime from the title screen.
Fill up the archive with all 84 discoverable entries.