The Stand-in Became the Fish Raised by the Protagonist's White Moonlight

'''☆Qingming Festival Release: The True Young Master Really Didn't Want to Become the Richest Man☆ Yu Jin is a lucky koi fish who transmigrated into a book as a submissive little substitute. The scumbag gong orders him around, and the little substitute works like a beast of burden... Is that even possible?! Yu Jin directly breaks up. Scumbag gong: Without me, you can't survive at all! When Yu Jin leaves, he has no money and is at the end of his rope. In desperation, he transforms into a koi fish and uses his luck skill to find the best caretaker. But the caretaker turns out to be the scumbag gong's white moonlight! Moreover, he discovers that the other person seems different from his ...