I Pull Out Excalibur

Wry Vent says:

It’s a good story, especially about the meaning of being a knight. The setting is in an Arthurian legend analogue.

A long time after King Arthur fell, the meaning of knighthood is being corrupted. The MC is born in the underground city of Camlann, a prison where convicts and sinners are exiled, never having seen the stars. He is born with a talent for swordsmanship and even learned to use aura without being taught, but as someone born in Camlann, he was destined to never be able to leave the city, and if he were to reveal his talents, he would be killed by those who manage the sinners, as a child of sinners is a sinner themself. However, every few decades, the Sword in the Stone ceremony occurs, and starlight condenses into a copy of Excalibur in various population centers, which is Excalibur seeking a new worthy owner. The MC works as a fixer for one of the slumlords in Camlann, and during a battle over territory, MC ends up drawing Excalibur. The MC commits to become a great knight who surpasses King Arthur, and he is assisted by the Constellation Merlin (female).

It’s rather refreshing sometimes to have a native as the protag, no possessor or regressor. MC is obviously the chosen one, but it’s still pretty nice to see as he grows and uses protag powers to overcome obstacles. A lot of the power scaling involves stars, Merlin is a 11-star constellation iirc, Excalibur is a 13-star constellation weapon, MC is unable to use the full power of Excalibur as he does not even have 1 star.