
The world's number one assassin has been reincarnated as the eldest son of a family of aristocrat assassins. In exchange for being reincarnated in another world, a goddess has imposed upon him one condition. "Kill the Hero who is prophesied to destroy the world." This was to be the mission in his new life. The synergistic effect of the vast knowledge and experience he gained that made all manner of assassinations possible in the modern world, and the secret techniques and magic of the fantasy world's most powerful family of assassins turn him into the greatest assassin of all time.

Yukito, the son of a questionable cult leader, lost his life due to the cult's ridiculous training practices. Now to his surprise, he was reincarnated into another world! It was an ideal world for him without the concept of "God" or "religion" BUT...! A unique "reincarnating in other world" adventure begins: creating a "religion" in a world without God?!

When a dragon attacks a peaceful village, it’s not the beast that perplexes resident Nikola, but the man who comes to their aid. Haga, member of a secret royal team of investigators, intrigues her with his eccentric ways. It may be due to the fact he’s a real-life QA debugger and this world is a VR game! With Haga by her side, Nikola’s inspired to venture out and learn her world’s true nature.