This Titled Douluo in Douluo Continent Is so Delicate

A professional thief read too many articles about Phantom Thieves, imitated Phantom Thieves for the first time and encountered a terrorist attack. He died young and woke up in a fairyland with everything except people. He accidentally killed a snake, which accidentally became his own soul ring. He accidentally discovered that after absorbing the soul ring, he became stronger, and thus became a level 97 peak Douluo. Unexpectedly, he returned to the human world. Unexpectedly, he followed the plot. Unexpectedly, he fell in love with the protagonist every day... Concept: sweet love