[Reborn + High Martial + childhood sweetheart who is a future sword immortal + one heroine] Su Yue, a grandmaster of martial arts, is reborn in his second year of high school. His childhood sweetheart, the future sword immortal, tells him to get his act together, and so he embarks on an invincible path.
He crushes the geniuses of his generation, slays the alien monsters invading his world, and purges traitors among humanity.
He turns humanity’s tragic fate around, leads Canglan Star into the interstellar age, and becomes a legend of the galaxy.
As Su Yue’s fame rises, alien princesses and divine maidens come knocking.
The sword immortal is getting anxious. “I told you to get your act together, not to go straight to heaven!”
Is it really just a single heroine?