I Retired from the Fairy World and Picked up an Old Man from the System?

Jiang Jianwei was tired of his life as an Immortal Emperor in the Immortal Realm. In order to retire early, he died on the Golden Throne on the spot, and his soul was smuggled into a world that was once invaded by monsters, but now turned the monster girl into a proud maid. After resurrecting his life, Jiang Jianwei has already planned his life: spend his retirement life honestly, slump in front of the computer every day, watch anime and play games, and use his special powers to heat up takeaways and so on. But in the last few days of summer vacation, Jiang Jianwei, who was kicked out of the house by her cousin, had to go out and go to the supernatural hall to make some extra money. As a result, Jiang Jianwei found that his plan seemed to have changed slightly. He casually picked up a "Ring Grandpa" who claimed to be the Immortal Emperor in the alley, and took out the opponent's system and used it as a deck optimizer. He wanted to register as a demon hunter to receive some subsidies, but accidentally punched a seventh-level magic wolf. "I'm just a low-level person in the early stage of the first level. I just want to get home from school on time and play games." "No, why did I save the world again?" "What do you mean I haven't retired yet?" Since then, Jiang Jianwei has embarked on a (forced) journey of saving the world and collecting cards.