Naruto: Uchiha's Unserious Saga - Chapter 17: A coincidence?

After a mishap, he accidentally became the protagonist. Unexpectedly, he and the villain cultivated together and they actually became dao companions.

“If you want to be with me forever, there is only the supreme road of achievement. Are you willing to travel with me?”

“Of course I’m willing.”

……

In Li JinZhi’s view, the protagonist and villain’s coexistence should be like swords and spears facing each other, a feud.

But when he crossed into the novel and became the protagonist; when he placed all his trust in the man who was supposed to be the villain; when the other side revealed some unusual feelings to him; when he held Ye Yu’s hand to the altar, he discovered that the relationship between the protagonist and villain isn’t as dull as he imagined.

When the monotonous pattern is broken, the feelings of resentment turns into sharing a common destiny.

- Description from Novelupdates

Haruto Saito, was playing a mobile game called “King of Cards” when his phone exploded due to overheating. He then transmigrated into the world of Naruto and found out...Why can I see the name, identity, and reputation of each of them?Killing hostile ninjas will drop cards? Ninjutsu cards! Taijutsu cards! Forbidden jutsu cards! Mystic jutsu cards! Can cards be eaten? Will you gain corresponding abilities after eating them? What are equipment cards? Killing Uchiha clan ninjas can drop Sharingan bloodline cards? Killing Hyuga clan ninjas can drop Byakugan bloodline cards? What if I kill Kaguya? ! !Naruto world is gamified! Reputation exchange! Ninjutsu enhancement! Achievement rewards! Unlimited first kills!“Excuse me, I'm not targeting anyone, I just say that everyone here is garbage!” At the Five Kage Conference, Haruto Saito said lightly, tapping his fingers on the table.

He was on his way to buy some beer to celebrate his acceptance as a civil servant when he was suddenly isekai’d by truck-kun.

There was once a hero.

Unique black hair. Excellent eyes. Contrary to his delicate features, he who had abnormal strength was called the Otherworldy Hero.

At the hero’s long adventure (up to the point where his wooden sword that had been kindly granted to him by the king was replaced by the holy sword blessed by the holy maiden) he saved the prince that had been kidnapped by the demon king, and so the kingdom was swept by worry.

The hero’s strength that could fell the demon king was deemed too dangerous to leave unrestrained.

One advisor spoke up. Why not marry him to royalty?

The king thought that was a viable option. Family, to an alien from another world would be the best of chains. There was one problem. The king was abundantly blessed with sons and had princes galore, but not a single daughter.

Ho, and it wasn’t like I could marry off two boys.

At a burst of inspiration the king slapped his knee.

That was it!

You just had to turn a prince into a princess!

And so the hero ended up in a position to be marrying a man.

This story, is a tale of the aforementioned otherworldly hero, and his bride, the former-prince-now-princess and their ridiculously hilarious marriage.