Sexy Isekai: One Piece Most Wanted - Chapter 3 - : Sweet Last Time R18+

Mu Zhiyan, after being transmigrated a millennium (1000 yrs) into the future, discovered that he was raised by his adoptive parents as a tool for them to access the heritage his (dead) biological parents left behind. When he was at a loss for what to do next, he discovered that his body hosted an additional
pharmaceutical system.

For a chance to return to his era of Earth, Mu Zhiyan decided to practice and practice; he must train the system to full level as soon as possible.

However, reality gave him a slap in the face. The world is dangerous and dreadful, making Mu Zhiyan recall his mother’s words of holding a thick thigh, resulting in him locking his eyes on a cool general…

So the rumored mysterious Mu Master faced General Han with a serious face: “I allow you to follow me, General Han.”

General Han: “…”

- Description from Novelupdates

I’ve reincarnated as the reverse harem game’s villainess, the one and only step-daughter of the Eckart duke family.

Kyōsuke got reincarnated into the world of Naruto in the Warring States period and became an ordinary member of the Uchiha clan.At this time, Uchiha Madara was still just a teenager, the God of Shinobi was still pondering how to make World Peace, Black Zetsu was plotting how to split the moon to save his mother, and the enigmatic Jigen was quietly chanting sutras in a secluded temple.The young Kyōsuke stepped onto the battlefield, but fortunately, he awakened a Point Redemption System, allowing him to trade points earned by killing enemies for various abilities.[Tenseigan, SSS-level item, requires 200,000 points to exchange.][Divine Tree Seed, SSS-level item, requires 200,000 points to exchange.][Truth-Seeking Orbs, SSS-level ability, requires 200,000 points to exchange.][Yamotsu Hirasaka, SS-level ability, requires 100,000 points to exchange.]Uchiha Madara: “Kyōsuke, you and I as brothers can surely annihilate the Senju Clan together!”Senju Hashirama: “My friend, let’s realize the dream of building Konoha Village together!”Black Zutsu: “Help me save my mother!”Uzumaki Mito: “You promised to marry me—are you trying to go back on your word?”Otsutsuki Kaguya: “This is bad! The clan’s law enforcement team is here. Kyōsuke, defend against them with me!”Otsutsuki Isshiki: “Impossible! How do you know my unique eye technique?!”Uchiha Kyōsuke: “Impossible? Please, I can even hit the moon!”

The alien DNA is the best thing that has ever happened to Ye Shuang because the genetic optimization it offers has made her more beautiful, more formidable, and more brilliant.

But… why doesn’t this unknown alien species have a fixed s*x before adulthood‽ Alternating between both sexes every few days, why‽ For gender equality‽ Thankfully, she still has a chance to save herself. As long as she can settle down with a partner before full genetic assimilation, she’ll be able to carry on with her life as just one specific sex. For the sake of the perfect female body, all the men out there, beware!

But wait, what are all these women up to? Why are you all looking at me like a piece of meat‽ Halt, stop, don’t come any closer… What the hell‽

- Description from Novelupdates