Demon's Virtue - Chapter 2: Big Blue Boxes

Childhood sweethearts.
The most popular person in school is my childhood sweetheart.

- Description from Novelupdates

Lou Yao Yao wasted her life fighting over a man, only to find out he wasn’t worth it in the end. Because of this man, she accidentally killed her rival in love, and even ruined the man who had always been watching over her.

Getting reborn as her 20 year old self, there is still time to fix everything. Lou Yao Yao decided to live as a genuine vicious woman. After getting her hands on the loyal like-a-dog man, she would show that cheating couple what pure loving affection looked like.

- Description from Novelupdates

In regards to the MMORPG Cross Reverie, Sakamoto Takuma boasted an overwhelming strength that was enough for him to be called the Demon King by the other players. One day, he gets summoned to another world with his appearance in the game. There, there are two people that insist “I am the real summon master.” Takuma gets slave-turning magic used for summoned beasts cast on him by the girls –

Liu Feng unexpectedly possessed the ability to travel between two worlds. He also has a storage space and became a second-hand dealer of the two worlds.He began his life as a city lord in the other world when he used a glass from earth to purchase a city.This is a wonderful world in the cold weapon era. In this world, Liu Feng can see catgirls, fox girls, rabbit girls, and elven princesses any time he wants.Princess: Liu Feng’s city is the world’s most fortunate city.Princess: I will definitely move in and live there, even if I have to ** the status of a princess.Graduate: The technology and ideas used by Liu Feng’s city surpass this world by a thousand years.King: That place has the world’s tallest buildings and has the world’s strangest things. That place is the world’s wealthiest and most magical city.