My girlfriend's downfall - Chapter 1 -

In the past life, he was an aerodynamic engineer of a well-known company, and in this life, he is a college student of a famous school.

When the two identities are perfectly integrated, what sparks will appear.

His life experience is also slowly uncovering the mystery, whether he can beat the tycoons of this era, and whether he can stand at the peak of world business.

- Description from novelbuddy

Two heroes of the game Legend of Heroes 2 who were rotten waters*.

This is a story about exploring technology in a wizarding world.Probability, electromagnetic induction, nuclear physics and theory of relativity—all of this can be mastered through scientific exploration and learning.Richard had always thought so… until he transmigrates to a world similar to the Middle Ages and becomes a prince. In this world of wizard and magic, he embarks on a journey to explain magic with science. One day, a dragon takes him away.“This is not in line with aerodynamics? It does not satisfy the Kutta condition, Circulation Theory of Lift and Bernoulli's principle either? How can it fly? Is there a special power source in its body?” Richard could not help saying as he glances down at the huge dragon he was riding on. “Well, I need to research this.”“By the way, you said you kidnapped me to find a playmate for your daughter. That doesn't sound like a good reason, right?”“Roar!” the dragon hollers furiously and waves its wings, soaring into the sky.Will Richard be able to continue on his journey of exploration and unravel the mystery of the wizarding world?

Dear father and mother.

Please forgive this daughter who is tainted.

I, Cecilia Silvy, will strive to continue to live peacefully…

I have decided to become a man!

High school student Hiyono Kanzaki reincarnated as Cecilia Silvy, the villainess lady of the otome game “Wruhel Academy Saint Princess 3”.

In order to avoid her miserable future, she decided to spend her time at Wruhel Academy, the main stage of the game… as a man.

Will she be able to complete her school life without anybody discovering the truth?!