Butcher Demon - Chapter 16: The Results of Teaching.

A minus’ hand that fails every singer he put his hands on, Kang Yoon.

One day, Lin Tian, an 18-year-old high school student, accidentally binds with a producer system. As long as he binds with a partner and cultivates them into a super “idol,” he can receive rewards. When he meets the equally eccentric and obsessive cellist Gan Yanyu, they hit it off immediately and start creating short videos, striving to achieve the highest honor in music competitions!Thus,In a season of cherry blossoms, just after winning an international competition, Gan Yanyu plays a piece that Lin Tian has never heard before on the stage in front of thousands of spectators.To Lin Tian's astonishment, the young girl puts down her bow and beams a radiant smile.“You’ve written so many pieces for me; this one is my composition for you.”“It’s called—‘Love Letter.’”

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

Lin Xuan transmigrated into a world where demon beasts rampaged. He became one of the lowest ranking wasteland reclaimers in the Germinal Organization to explore the mystic realms.

The Zero Realm mystic realm was the Giant Rock Cave. The First Realm mystic realm was the Demon Ant Nest. The Second Realm mystic realm was the Tree King Sea.

[Congratulations on seizing a Gold Swallowing Lizard as one of your avatars for gaining more experience. Do you want it to begin its training?]

[Your current location is first floor of the Giant Rock Cave. (1 coin per minute. 5 exp points per minute)]

[Gold Swallowing Lizard has been training for 4 hours. Do you wish to collect its experience?]

Lin Xuan’s eyes were wide open. He was well-versed in how this worked. This was similar to the AFK games that he played in his previous world.

As such, he began his comfortable journey of becoming the strongest.

Up until one point, the Germinal Organization discovered that he was abnormal and decided to deal with him. It only then did Lin Xuan realize that even Seventh Realm fighters and the managers of the organization were inferior to him.