Shinwa Densetsu no Eiyuu no Isekaitan - Volume 3, Chapter 1 – A New Problem, Part 5

Crossing into the world of Naruto, and acquiring the One Piece system, with all the powers of the world of One Piece, swordsmanship, devil fruit, domineering.

-Do you think that your fire is very powerful? I have the burning fruit.

-Do you think that your thunder is very powerful? I have a thundering fruit.

-Do you think that your otter is very powerful? I have the frozen fruit.

-Did you said you want to die? Don’t worry, I also have a nickname: Death Doctor.

- Description from Novelupdates

Over a million years ago, the first human contracted with the first Spirit. Ever since then, Spirit use has become commonplace. Humans used Spirits to carry items and start fires. Eventually, even start wars. Thousands upon thousands of years past and one day, one human did the impossible. He transcended his mortality and ascended to the realm above.

Rumor had it that Qiao Xi had a weak constitution—a sickly beauty. Rumor had it that she spent a fortune every day on medications—eating them like candy. Rumor had it that ten servants waited on her by her bed every day—a burden to everyone. They were all waiting for the Qiao family to toss Qiao Xi back to the countryside and leave her to fend for herself.Qiao Xi: "They're all saying that I'm weak and can't take care of myself. Apparently, I spend money recklessly as well.”She looked down at her tattered shirt and was exasperated.Qiao Xi: “Are you saying that this wealthy family lets their daughter wear tattered clothes every day?”The Qiao family's rich daughter? She had enough! She would not be it anymore! Therefore…Scumbag guy: "Without the Qiao family, you're nothing."Qiao Xi: "If I'm kicked out of the Qiao family, I'll be done for."Scumbag girl: "Sis, don't be too disappointed. As long as you work hard, you'll be praised one day.”Qiao Xi: "Shut up, I don't know a traitor like you."The scumbag guy and girl: "???"Rumor had it that the Gu family's youngest son, Gu Zheng, rashly married a woman who had nothing but looks.Qiao Xi: "Is someone looking down on me?"One day, Qiao Xi saw one of Gu Zheng's employees racking his brains over a series of numbers on the computer screen. Since she was free, she lent a hand.Did she just crack the firewall created by the joint efforts of top elite hackers?!Gu Zheng inched closer with every step. "Qiao Xi, what else are you hiding from me? Hmm?"Qiao Xi: "Oh, no! I feel dizzy again! I'm so weak. This body of mine is just too weak!"

Yan Fei ordered a small drone online. I didn’t expect the drone to suddenly become his avatar.

Magical! Even more amazing is still behind, this drone can actually be upgraded, unmanned fighters, heavy fighters, stealth bombers…

Is this one thing that is fighting against the sky, is it really my avatar? Is it difficult for me to hang the world?
Yan Fei said Alexander!

- Description from Uukanshu