My Girlfriend From Turquoise Pond Requests My Help After My Millennium Seclusion - Chapter 12

Kota Sakamoto—virgin weeb, social reject, and hentai game addict—gets sucked into a perverted dungeon world straight out of Carnal Labyrinth EX, the 18+ erotic strategy game he secretly 100%-cleared.The catch?All eight of his hot classmates and their strict MILF teacher got dragged in with him.The other catch?They hate his guts.Worse still, this dungeon world is exactly like the game—every level a twisted, orgasm-fueled survival puzzle where failure means death by overstimulation, lust-monsters, or trap-triggered climaxes that literally drain your soul.He’s the only one who knows how to survive.They either listen to the virgin... or moan themselves to death.Bondage plants, lewd slime traps, fetish trials, and orgasm boss fights await—and the only way forward is obedience.What starts as reluctant cooperation turns into obsession, as each girl slowly falls for the boy they once mocked...…the virgin who’s now their dungeon master.

Childhood sweethearts.
The most popular person in school is my childhood sweetheart.

- Description from Novelupdates

After Song Juyao died and emerged from the virtual world, she learned that her entire life had just been a reality show which was led and controlled by others.

One billion viewers watched this live broadcast, all of them pointing fingers at her and ridiculing her life whilst the director team thought up every possible method to design setbacks for her, pulling her into the mud over and over again.

Then, Song Juyao was reborn. This time, her memory was not suppressed.

This was a crazy world. People were discontent and bored of their lives. They had also lost their enthusiasm for various kinds of entertainment, falling to the point of seeking all sorts of thrills in order to arouse their emotions.

Later, they found a precious treasure. She was perfect. They held her in the palm of their hands and went wild for her. They even regarded her as a God and worshipped her fanatically.

- Description from Novelupdates

When The Cute Kunoichis Spied on Their Teacher's Secret is a light novel written by Kazuma Kamachi and illustrated by Ryuushi Tajima.

The story takes place in a world where Japan never ended their isolationist phase, and agents from foreign powers are always threatening to steal the country's advanced technology. In order to combat this threat there has been a resurgence of ninjas that use Strategic Martial Arts, techniques that combine cutting-edge modern technology with a traditional foundation of martial arts and ninjutsu. The story follows Souha Sugiyado, a 17-year old ninja instructor and former ninja prodigy who was forced to retire from active duty by the wounds he suffered in his last mission. Souha's four students are all kunoichi who have all gained the rank of Elite Ninja, the highest official rank available to ninja. However, one day two Shogunate ninja approach him with the news that his four students have gone rogue and have stolen a portable modular nuclear reactor, and thus they ask for his help in bringing his students to justice.