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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.

Power? Wealth? Glory? Who freaking cares!

Jack just wants to live in peace, but he’s the greatest trouble magnet EVER!

[Ding! Congratulations! You've Awakened!]

[Unlocked SSS+ Curse of Obliteration!]

[Good Luck Surviving!]

Just as all hope seems lost, he gets reincarnated in the Game-like Magical world of Eternia! Is this finally a chance at an uneventful life?

Jack will do whatever it takes to accomplish his goal, including World Domination. Can’t have anyone disturbing you if they’re all under your rule!

But this might prove troublesome… For instance, how are there so many Demonic Gods trying to make him their Slave?! Can’t they just leave him alone?!

Every Goddamn Day….

[Class Unlocked: Ruin Knight!]

[Class Unlocked: Blood Mage!]

[Class Unlocked: Grim Reaper!]

[Class Unlocked: Vampire Progenitor!]

[Class Unlocked: Apocalypse Overlord!]

[Class Unlocked: Ethereal Incubus Prince!]

“Sigh…..”

In the spirit of love and in order to help his ex-boyfriends walk out from the shadow of heartbreak, every time before Ye Ming leaves after successfully completing each world’s romance mission, he will ‘kindly’ (ruthlessly) break up with with his boyfriend.

After transmigrating to N different worlds he had finally gained enough experience. At this time the system informed him that because the accumulation of his ex-boyfriend’s grievances had exceeded critical levels, leading to the failure of all his missions…. So he needs to return to each world to eliminate their grievances if he wants to complete his missions!

Ye Ming: This is an outcome I didn’t predict.

System: I tried to tell you before that if you did this you won’t have a good end.

The ex-boyfriends all laughing coldly: He He. That despicable scum that ran away after deceiving my feelings is finally back. This time don’t even think about running away!

Ye Ming: ……

System: Since you “zuo” yourself to death, even if you kneel you have to go to the end!

Ye Ming: Luckily I have a special “scum cleaning” technique ^_^

- Description from Novelupdates

Take over a Homeworld mothership and travel to the world of Star Wars?

Tang Xiao: “This world is so dangerous. Mom, I want to go home.”

Wait a minute, the mothership database actually has “Original Sin of the Solar Empire”, “Halo”, “EVE”, “StarCraft”, “Stellaris”? ?

And there are still Jim Raynor, Master Chief, and Archbishop Artanis sleeping in the freezer?

Tang Xiao: “Humph! They will all bow down at my feet!!”

The Fourth Calamity… ah no, long live the Fourth Empire!

- Description from novelbuddy