Alpha's Dark Desires - Chapter 5: Heart Break

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.

She was drugged by her ex-boyfriend and had her first night with a mysterious man.

Before going to college, an ordinary high school student went to celebrate and got drunk. When he woke up, he found himself in a completely different world. There was a big sect, the approaching sect entrance examination, a slum where his body’s previous owner lived, and a shared memory about a missing young girl.

When he got tangled in a fight with a few punks in this different world, he fell off a cliff and miraculously found himself still alive, with two more voices ringing inside his head. They were Sword Master and Saber Master. In the company of them, he continued to find out more about this whole new world. He took the sect entrance examination, entered the sect, met a strange man in black, and even participated in a major competition of the sect to have a chance to win over his peers!
In this whole new world, he was born again and got to explore the fantastic martial world!

- Description from Novelupdates

The apocalypse has not yet begun, but the system has arrived early.

Then Chen Mo’s style of daily life suddenly changed.

You can get rewards for eating and petting the dog, and communicating harmoniously with beautiful women is regarded as a battle with the ninth-level corpse king!

[It was detected that the host was so brave that he fought the ninth-level zombie king until he lost all strength. Since the target level was too high, the host could still get points as a reward even though he had not completed the kill by overstepping the level of the enemy. The host is hereby rewarded with 5,000 survival points and an A-level gift pack. 】

Chen Mo, who had just finished the battle with his schoolmate, couldn’t help but have a strange look on his face when he looked at the translucent floating window in front of him and the harmless schoolgirl beside him.

[It was detected that the host had tamed a fifth-level mutated corpse dog. Because the target level was too high, the host jumped over the level to tame the alien beast, which is unparalleled in charm. We hereby reward the host with 2,000 survival points, a B-level gift pack, and +50 charm! 】

Chen Mo, who had subdued a wolf dog with snacks, listened to the prompts in his ears and felt quite fucked.

Chen Mo lives a normal life, but in the eyes of the system, his life is full of monsters and ghosts.

This resulted in Chen Mo being able to trigger various rewards with every move he made. When the end of the world came, Chen Mo’s rewards would be maxed out, and his combat power was incredible!

- Description from novelbuddy