After I Maxed All My Weapon Proficiencies - Chapter 31

The story revolves around Charles Karino, a Levaamu Empire mercenary aerial pilot who mans the twin seater reconnaissance seaplane Santa Cruz. One day, he receives a preposterous assignment: to fly solo over 12,000 kilometers of enemy waters to protect a girl named Fana del Moral. Fana happens to be the next in line to the empire’s throne and a girl possessing beauty “equal to 5,000 beams of light.”

This is a standalone book. There’s another series under the name “To Aru Hikuushi e no Koiuta” (Love Song for a Certain Pilot) set in the same world, but in a completely different place and with different characters.

– Ulrezaj @ Mazui

Adapted to anime as “The Princess and the Pilot”

After the fall of the Galactic Federation, long-time lovers Lu Li and Xie Jianwei defeated the alien invaders, and formed the Empire with Lu Li as marshal. Everyone thought that all was well between them, but.

Xie Jianwei one day found out that Lu Li’s personality had split into several parts.

They were all individuals, yet still the same Lu Li. How could Xie Jianwei bear to watch as each Lu Li plot to kill the other?

Xie Jianwei used his SSS-class spiritual strength to enter Lu Li’s inner world, where Lu Li was god/director/actor all in one. To get to the bottom of the mystery, Xie Jianwei had to act along Lu Li’s delusions, else the dreamworld would collapse, worsening Lu Li’s condition, and split the personalities even further.

- Description from Novelupdates

It was supposed to be a perfect deal in which both parties got what they needed. However, after the child was born, he tore up the agreement with discontent and told her, “Who said that we’d only have one child? I want twins! Twin brother and sister! You’ll continue giving birth to more children until you bore me a pair of twins!”

[Urban Masterpiece! Over a Million Subscribers] The Imperial Physician of Heaven was reborn in the City of Flowers, seized control of the world's viruses, absorbed Soul Consciousness, amassed wealth rivaling nations, held overwhelming power, and was surrounded by beautiful women.