Who Designed This Underworld Dungeon? - Chapter 25 - Bonfire ???

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

In her past life, Lu Zhaozhao placed her trust in the wrong people, inadvertently causing the death of the man who deeply loved her.Reborn on the first day she met him, Lu Zhaozhao decisively dragged Song Si Nian to register their marriage. As she busied herself with dealing retribution and slapping faces, she had only one principle regarding her husband, who suffered from emotional expression disorder: to love him.What Lu Zhaozhao did not know was that she was Song Si Nian's only light. His illness made him paranoid and obsessive, yet he dared not reveal his true self to her.But the truth cannot remain hidden forever. When everything about him was laid bare before her, Song Si Nian held her tightly, tears reddening his eyes, and with a timid voice asked while buried in her neck, “Zhaozhao, do you not want me anymore?”

Many islands dotted the vast oceans of this world. However, some of the islands were a lot more sinister than the rest. Those islands, known as Nightmare Islands, were true nightmares to all but the strongest and most fortunate. Children were kidnapped and thrown on these isolated islands by the Nightmare Palace, forced to sign soul pacts with evil soul pets: Nightmares. These devils slowly devoured the souls of their trainers to grow stronger. If the children did not cultivate fast enough, their souls will be devoured whole, leaving only an empty husk behind.

Chu Mu, the protagonist, was an heir to the Chu Clan, but due to a plotted murder, he was thrown on the island, sentencing him to almost certain death. Dancing on the edge of life and death, he struggled to survive with a small Moonlight Fox he captured. When he finally escaped the devilish foremen on his island, he couldn’t help but let a breath out. But little does he know, the experience was only a beginning to a fated journey with his little Moonlight Fox…

This is the story of Long Yi, who was killed because he took revenge for the girl he loved. Before he dies, a strange lightning carries his soul into a different realm. How will he live, when the first thing he noticed upon arrival is that, the man whose body he possessed is raping the country’s princess?

- Description from Novelupdates