Apocalypse: I Have A Multiplier System - Chapter 66 - Special Mission

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

The protagonist, Winnie (文尼), confesses his love to his childhood friend—the princess he’s been secretly in love with for years—but is brutally rejected in public. His heart shatters, he’s humiliated and ridiculed, and he collapses unconscious. When he wakes up, he vaguely remembers his past life’s memories and realizes he has transmigrated into the world of an otome game he played before. At first, he’s thrilled, thinking, “Nice! I must have been reincarnated as a villainous side character who disrupts the protagonist’s romance, right?” But then… surprise! He’s not just the villain—he’s the “Saintess”!

WARNING! MATURE AUDIENCES ONLY!!***Casey is a top event planner, planning events for the most elites in the city. She's now tasked with the career-defining job of planning her best friend, Kira's, wedding. However, her life turned upside down when she found out she was falling in love with Jace, her Kira's fiance!Jace is the CEO of Chillz streaming platform, one of the biggest in the country. He's also one of the most dashing bachelors, always on the news and always being hounded by paparazzi. In a desperate move too expand his company, he opted to get married to KIra. But it all changed when he met her best friend, and suddenly, even the future of his company couldn't stop him from wanting to be with her.As passion burns hot and the embers of love is fanned, Jace and Casey try to fight their growing attraction to each other to respect Kira. But with such intense feelings, there is only so much they can do. Will they be able to stay away from each other regardless of the mounting temptations? Or will they throw caution to the winds, finding happiness in each other's arms even while everything they've built and worked hard for goes up in flames?

Once I’ve become Immortal, then my attempt to conquer the world shall begin.