Heroine Hunts Heroines - Chapter 7

A tale about the former leader of a special organization served under royalty, now leaving his past life behind and unintentionally getting involved with the martial world.

- Description from Novelupdates

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.

The daughter of the Chi family has been living in the mountains for sixteen years. Suddenly, she returns to the White City. However, it's soon found out that this missy’s image is a little off. On the first day, the paparazzi catches her having a meal with one of the best actors. The photographs quickly top the hot searches.

This is the story of a modern sailor who was accidentally reborn as a soldier of the Brazilian Expeditionary Force, and finally became the largest plutocratic family in Brazil by virtue of his foresight.

- Description from novelbuddy