I Fabricated the Techniques, but my disciple really mastered them? - Chapter 730 - 385: The Witch’s Conspiracy, The Marvelous Use of Blood Heart Fruits_2

Let’s fight! Go! Who am I afraid of with a chip that turns into a brain cell? ! Get promoted and get rich! The nest treasures are all mine!

- Description from novelbuddy

An Individual from Earth finds themselves in the Shinobi World, equipped with a Scientific System. From that moment, he delved into scientific research far ahead of its time.

Mizuno Eiji, a siscon high school student, receives the worst news from his older sister: “I have a boyfriend now.”In order to identify the man who stole his sister, he follows her on a date and… sees a suspicious figure watching the two of them as well.That person is Hasegawa Aoi, his classmate who is famous for hating men despite being a beautiful girl!“I can’t believe you are actually a brocon.”“I never thought you are a siscon.”In order to make their beloved sister and brother to break up, the two of them formed a mutual relationship and went on a date as fake lovers while following the brother-sister couple… Aoi kissed Eiji on the cheek.“You’re the only one who is… special.”Brocon x Siscon, two people who shouldn’t be able to get along is actually a perfect match…!?

If I fail to seduce all the heroines of this s*xy game, I’ll die.