Chainsaw Man: the Weird Demon in Lesai Cafe

[Chainsaw Man + Single Female Protagonist Lesai + No System + Protagonist Demon] The boy's real name is He Ling. He suffered an indiscriminate disaster when he was young. When he was about to die, he repeatedly knocked on the door of death, but was completely rejected by the God of Death - Death unilaterally refused to accept his soul. The wound would heal at a distorted speed, and the pain would last forever and cannot be relieved. The endless torment of being unable to survive or die gave birth to the power of the miserable demon to reside in his body. This power split into two completely contradictory forms according to his mood. It was the embodiment of his inner goodwill and destructive instinct. Although he was good-looking, no one dared to approach him. Without his consent, once he came close, he would be squeezed by his respective negative emotions. The death of all things in the world closed the door to him, and he wandered alone for several years without a home in the world until he met Lacey who was working in a coffee shop on the corner of the city.