Young Master Gu, Please Be Gentle - Chapter 4 - I Don't Know How to Moan

This is actually the story of a teenager who, after the devastating and spartan-like training of his crazy cool/Gong teammate, turned into a super amazing point guard that could blow up the skies even though he may seem low-key on the surface.

Also, Nie Chuan is Reese’s first love.

Nie Chuan: I’ve decided to promote you to becoming my best friend!

Reese: If I can be your best friend, it just means that you have no friends.

Nie Chuan: Hey! How could you say that! Do you know what it means to be my best friend?!

Reese: I’m sleeping.

Nie Chuan: It means that when I get married, my bride may not necessarily be her, but my groomsman must be…

Reese: The groom must be me.

Nie Chuan: What– you want to snatch my bride away?! You’re too inhumane!

Reese: Sleep.

- Description from Novelupdates

In his first life, he was the legendary hero who achieved the impossible, slaying the Demon King. But his reward wasn't glory, it was betrayal. Feared by the gods who ruled the world, they conspired to strike him down, murdering him without mercy.But Kai's soul managed to reincarnate in a modern and ordinary Japan. However, after a tragic accident on Earth, Kai returns to the world where he was once killed.Lyla, the tenth goddess and the only one who didn't betray him, never stopped watching him, she has waited for this moment for centuries. Her love is as vast as the universe... and just as dangerous. To protect her favorite, she has sacrificed her power to grant him a tool never seen before, The System.Now, Kai with no memory of his first life and Lyla must navigate a world fractured into nineteen kingdoms, dominated by the religions of the other nine corrupt gods who feast on the faith of the masses. With an obsessive goddess by his side and a power that grows constantly, Kai begins his grand revenge.

Three thousand years of bowing down to the Demon Lord, I would rather be a mortal than a celestial being when looking back, but for her I will… become one who controls life and death!

A man reincarnates in the body of a boy who suffered a tragedy, only to realize that he is in the world of My Hero Academia. What's even stranger is that his quirk seems to have the abilities of Nen and Haki.