Everyone is Young Except for Me - Chapter 19

“You want to steal my genes then leave?” He grabbed her and tried to force her to hand over the child that was born three years ago.

A boy wakes up with omnitrix as a X-GENE

The female protagonist crossed over to become the Venerable Woman Kingdom’s Crown Princess. That’s right, that’s right, holding power and authority and handsome men!

What? She’s has the body constitution of trash and is unable to practice martial arts?

Having finally set her eyes on a good looking man, he turned out to be a snow wolf. Isn’t that just so sad and depressing….. Having captured a good looking man, a certain woman laughed sinisterly. “Remember this. You are already mine, so you have to remain chaste for me. If you do not obey, I will then reject the goods.”

The handsome looking man was stunned with his mouth agape. “You….. You’ve gotten it completely backwards!”

- Description from Novelupdates

After experiencing heartbreak from being abandoned, he enlisted in the military.

And then, he became a war hero.