Naruto System in One Piece - Chapter 28

This is the story of Kir, who has to thwart the will of Heaven, Hell, and his parents in order to survive, protect the people he loves, and achieve happiness.He just has to make it through life at a magical academy, avoid dying, and survive to find his birth mother, the lost Daughter of Heaven. Or be forced to take his place at the side of his father, a Duke of Hell bent on destroying the way things are.It's a lot to handle for a quiet, brooding angel boy.Fortunately, he has company. A succubus, a foxkin girl, and a half-angel boy to start. And Kir has his own secret: this isn't his first go at life.

“You’re not taking me to bed. Ever.”

After choking to death on a watermelon, Rong Jiahui thought that she would enter the netherworld and be reincarnated.

But when she opened her eyes, she discovered, to her very horror, that she had returned twelve years into the past…

Looking at the beautiful and awkward “little brother” that would be conferred the title of Marshal in the future for outstanding military service, she almost let out a snort of laughter.

She firmly decided to hug the thigh of this little brother, and climb to the top of her life!

The plan was beautiful, but it had just one problem.

Why had this little brother… suddenly turned into…

A little sister…

- Description from Novelupdates

Lu Jianyan is absolutely certain that the world he lives in has been crazy.

The romantic friend suddenly announced that he would love him to death; the stranger suddenly decided to die for him … It seemed that the whole world wanted to fall in love with him overnight.

Lu Jianyan: What? [Dazed.jpg]

World: Friend, have you heard of fast reincarnation with the system? There are always a few people who firmly believe that attacking you is the best shortcut to complete the task.

Lu Jianyan: Keep it simple. Please let the way to complete the task simple.

- Description from Novelupdates