Toaru Majutsu no Index - Volume 21, Chapter 8: Their Many-Sided Counterattack. Combination.

Wang Jin found a beautiful drunk mixed-race boy on the side of the road. He looked pretty at night and couldn’t help bringing him home and sleeping with him. When he woke up the next day, he found out that the beauty was a minor.

This is the story of two people who met by chance, their lives turning from narcissism and selfishness to falling in love with each other’s trivialities.

- Description from Novelupdates

“I wasn’t born a lucky person, I’m just too strong.”

On his way home late in the evening, Xiao Li found a letter asking for help and inexplicably came to an unknown place. He had to finish the task given before he could succeed in returning to reality. In the legendary haunted school, Xiao Li looked at his companions’ task of ‘survive until dawn’ and then looked at the tasks displayed in his book:

Tell me your name.

Tell me what you like.

Kiss me.

Xiao Li: ????

He was very confused and then refused.

- Description from Novelupdates

On a certain day, Xu Xing suddenly received yin-yuan eyes; he could see a red string between lovers. Then he discovered that he had a tight connection to his own left hand.

Xu Xing: I TM …… will I be ‘solo’ for life? : )

The second day.

Xu Xing suspected that he had seen a pair of ‘gay’s. The left side of the boy’s body had two red strings. The one in front was tied to his hand, the one in the back was tied to the boy’s right side.

The bottom of Xu Xing’s body suddenly tightened. Trembling in fear, he turned his head — only to see his ‘local area’ connected to a red string tied into a beautiful, intimate bow that was attached to the school grass sitting behind him ~

Xu Xing: Excuse me???

- Description from Novelupdates

“Young man… if you could go back in time, what period would you like to be in?”