Suterareta Yuusha no Eiyuutan - Story 2-Last: 『Best Friend』

…but it seems pretty doable.

Shao Xian went back in time to when he was ten years old and met his pitiful old enemy. He wanted to personally train him so that when the other grew up, he wouldn’t turn against him.

But he didn’t expect that this old enemy would turn sweet and sticky after being taken care of.

It was just that this little sweet cake was too insecure and often, golden beads of tears would drip.

As soon as he cried, Shao Xian was helpless, and of course, he would want to give him everything.

—

On the way to an auction, Shao Xian died in a car accident.

Before he died, he thought, Fu Baizhou must be very pleased without him being present to mix things up.

After all, in Yan City, Fu Baizhou shocked everyone with a name of being cruel and ruthless.

Only one person dared to confront him.

When he opened his eyes again, he was wearing a custom suit, reexperiencing his tenth birthday.

He saw a dirty little boy being ridden on like a horse. He suddenly remembered the rumors that had been circulating widely in his previous life. It was about the tragic childhood of a ruthless man surnamed Fu.

- Description from Novelupdates

Leon Thorne was the disgrace of his house, overweight, softspoken, and dismissed as a failure before he ever picked up a sword. Mocked during the Awakening and branded an F-rank, he was expected to fade quietly from the halls of power.But he didn’t.Because this wasn’t his first life.In another timeline, Leon watched House Thorne fall, shamed, scattered and erased from history. Powerless to stop it then, he’s been given one chance to rewrite it now.Stripped of excuses and reshaped by hardship, Leon claws his way forward—through blood, sweat and silence. Now, leaner and sharper, he enters an academy where only strength speaks and legacy decides your worth.But Leon carries no crest. No backing. Just scars, a sword, and the will to shatter fate itself.He’s not looking to be acknowledged or praised.He’s going to rewrite everything.NO MATTER WHAT IT TAKES.

A man with a lifelong martial arts background, raised in Asia due to his family's profession, moves to the US for education and work. He discovers Historical Medieval Battles through a colleague and becomes deeply passionate about it. He trains hard and becomes skilled enough to represent his country.During a competition, his armor fails, and he's struck in the head with a two-handed axe, seemingly dying. But is this truly the end?