City of Sin (Yanyu Jiangnan) - Vol 7 Chapter 138

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

While returning home from a boring day of work, a black hole opened up in front of John and sucked him in. Before he was floating in the blackhole, a helmet latched on to him. "Uploading A.I under progress...Activating Survival Kit" A weird robotic sound appeared within the conscious of John and suddenly a white energy enveloped him... After opening his eyes, John noticed he was teleported to a whole new world. A world of magic and he was a user of a system. Arkon, the world John was brought too, was a medieval world which is 10 times bigger than earth. This new world held many new mysteries and this was the beginning of John's adventure. John will dominate and stir the world with his new system. Old technologies begone and use my advanced techys instead! Ha! you want to hold a politic, economical and military war with me? Sorry but my system is too broken for you all to counter.

~ Erothyria is a world where depravity and fantasy collides ~ And this world is where Dagwood Ackley was thrust into! After picking up the rejected video game called ‘The Daughters of Eros,’ Dagwood is reincarnated into the game and is reborn as a son of Eros! But...it is impossible! No Mother is allowed to begat a son! He takes the identity; Aeric of Starlight, and gains extreme beauty and charm as the first and only ever son of the God Eros. But what is his task? Ding! [Claim all the wives and daughters of Eros] Ding! [Defeat the Goddess of Lust and Claim her!] Ding! [Build a harem of Queen Mothers and daughters and take over the Throne of Eros!] With the Celestial Depravity System, Aeric becomes the most sought after male in all of Erothyria, but he must defend this land from the evil dragons and titans, and in the end, [Claim] it all for himself!