Inside the Cave of Obscenity - Chapter Volume 1 6: Knights 1

Once I’ve become Immortal, then my attempt to conquer the world shall begin.

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”

In 2100 at the turn of the century the first full dive VMMORPG game 'Omega' was released

“Gege, what does cultivating feelings mean?? Is kissing when you eat someone’s mouth?? How are children born??” The 3-year-old Xiao Tu likes to chase after her ChangZhi gege and ask questions…

Ten years old Cheng Zhiyan had always seemed been studious and hardworking. However, when he heard these three questions, he was stunned and fled in an instant… until one day, a certain thirteen-year-old Xiao Tu pressed Cheng Zhiyan to the wall and kissed him. Then she smacked her lips to savor the taste and said: “It turns out that when you kiss orange juice, it really taste like orange juice ah…” the always calm and indifferent Cheng ZhiYan, once again fled in defeat.

**TN: ChengZhi Yan’s name sounds like orange juice

- Description from Novelupdates