Lu Shu is an orphan who gains a unique ability to grow stronger by collecting negative emotions from the people around him.Instead of training normally, he basically trolls people to become stronger. It's a Donghua with 12 episodes available but the manhua has the full ongoing story.

Check it out here:

Spoiler:

S1: https://www.youtube.com/watch?v=tZC_Llh_YfU

S2: https://www.youtube.com/watch?v=KZ7GjE1CBII
Read it here
https://m.webnovel.com/comic/spare-me-great-lord!_16541051906427701

Season 3 trailer:



If you like these types of manhua, I recommend also checking out Anti Meta