Sword Art Online - Vol 5 Chapter 1

A part-time job contract. He became the cold CEO’s imitation boyfriend. He merely wanted to earn a few small bucks and live a comfortable life, but a pity, he was in constant turmoil since then. Well, life had something else for him despite his wishes.“That… beauty, will there be an increase in wages for conversion from ‘boyfriend’ to ‘husband’?”

- Description from Novelupdates

He is handsome, arrogant and is of the elite class. Being straightforward and brave, she shamelessly pursued him, sending him gifts, flowers and tried to get close to him. She was humiliated when his staff gossiped about her and retreated. Then he rejected her and told her they could only be friends. She avoided him but no matter how much she tried, they frequently cross paths.

Suddenly one day he told her. “I want to be your boyfriend.”

What a mess! ! !

When the cosmic tyrant Frieza detonated Planet Vegeta, home of the Saiyan race, a twist of fate sent a lone infant—placed in an escape pod by his mother—hurtling through the void toward an unknown destiny. The pod's trajectory led him to a desolate world: Titan, a planet ravaged by catastrophe and long stripped of life.Beneath the shadowed skies of this barren realm, the watchful eyes of Thanos, the self-appointed director of the universe's population balance, beheld an unexpected sight—a child, the sole survivor of Titan’s forgotten civilization... a child with a tail swaying behind him.“A survivor of Titan... From this day forth, you shall be my son.”

In a fantasy world where everything depends on level, only ostracization and pain awaits a man that is unable to level, even if he was of noble birth.

But what happens he discovers an alternative source of experience…