MTL - The Best Male Supporting Character In the Pet Text is Reborn - Chapter 56

The world that nurtured the civilization which reached the pinnacle of magic was on the verge of destruction.
The last survivor transmigrated to the past, when the magic civilization started growing, as countless mages were still fumbling their ways through the thorny paths of magic knowledge.
He, who came from the end of the magic era, aim to reach the pinnacle of magic.

- Description from Novelupdates

Kurogami Ichiro was desperate because he couldn’t achieve what he wanted when he once started his martial arts path at age of 8!

This is a world where everyone participates in simulations, amidst an eerie apocalyptic setting.Only by performing a Heaven-defying Fate Change in the simulated life can one avoid being consumed by the black mist.Lu Yuan crosses over accidentally and gains an Adaptive Talent, receiving a Divine-level Talent automatically in every simulation!First Life: A modern technology world where Martial Dao is in decline.[Heaven Rewards Diligence]: With every bit of effort, reap a hundredfold reward; even breathing makes you stronger!Second Life: A Magic World, reincarnated as an ordinary skeleton.[Undead Calamity]: Transform into the Undead Dominator, using the Catastrophe Legion to battle against the Abyss Demon!Some Life: Parasitic cultivation, where cultivators are reared by the Insect Race.[Heaven-defying Comprehension]: Deduce the Gu Dao cultivation system, becoming the first Gu Immortal in history!As each Divine-level Talent is activated, the Gods and Demons finally discover in terror…

A swordsman hailed as the strongest has reached his end, and was reborn as an elven girl.

This is the story of the swordsman only knowing how to kill in his past life aiming to be the best healer as a girl.

In the final battle against a monstrous entity with his teammates, the strongest swordsman, the Hero’s mentor and the only one in their party incapable of magic yet the most skilled with the sword, sacrificed his life to end the battle once and for all. Reincarnated as an elf girl, the strongest swordsman decided to live a different life from his blood-stained past and pursue the magic that he has never used before.

As a girl, she apprenticed under the old potion maker and healer of the village to be like someone she had admired in her previous life while keeping her condition sharp with sword training as she had done in her past life.

After learning the ways of a healer and convincing the elf village that she is capable enough of leaving for the outside world, she hitched a ride with a party of adventurers passing by the village and went out to see how the world has changed.