DxD: System of the Harem King - Chapter 311: Yuuki & Asia (Part 1)

After waking up in the body of the Young Master of the Luo family, he finds he has the knowledge of hundreds of games and Light Novels. However, he finds his Dantian is crippled, so he can’t practice cultivation! Luckily, he has the Upgrade system.

Killing Monsters, doing Quests, and even killing people- it’s just too easy. I don’t have any Martial Arts? I have hundreds of light novels, just let me level up so I can get this Main Character’s Martial Art! The only problem is: Should I follow the “This OP character cultivation” or should I follow “Another OP character cultivation”?! The tragedy!

- Description from Novelupdates

The boy who Sneaks in My Bedroom Window

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

An earthquake, another world, and a tentacle monster in his basement claiming to be his wife are just the beginning of a chaotic new life for Nick. He has new, dangerous, and exciting neighbors to get along with, people who want to kill him just for existing, and monsters with a taste for blood.But he's going to do his best to get to the bottom of everything and maybe even find a way back home. Even if he doesn't, he's at least not alone, for better or for worse.