It's Hard to Rise as a Substitute, Isn't It?

Series finale: "The Substitute's Guide to Rising to the Top" Series finale: "A Substitute's Rise to the Top: A Record [Quick Transmigration]" Series finale: "The Male Supporting Character Can't Take It Anymore [Quick Transmigration]" Li Shen found a new job: playing the substitute for the male lead. He was so good at his job that he accidentally stole the male lead's place. Fake Young Master Substitute Gong X Reborn Shou The protagonist, Jiang Miao, was persecuted to death by his stepmother in his previous life. Before dying, he learned that the person he had secretly loved was actually the real young master of the wealthy Li family. Li Shen, the noble young man his stepmother had used to torment him, was nothing more than the son of a poor gambling addict. When Jiang Miao opened his eyes again, he discovered he had been reborn. He went to school, saw Li Shen surrounded by everyone, and without hesitation told the Li family the truth. The Li family found their real young master, Li Chou, and kicked the fake young master, Li Shen, out of the house. Li Shen could only support himself through odd jobs and just barely afford to stay at St. Louis University. After Li Chou returned to the Li family, he immediately went abroad to study with his biological parents, who also wanted him to receive treatment for the psychological problems he had developed growing up in a poor family. With the man he loved gone, Jiang Miao took a dislike to Li Shen and decided to avenge Li Chou. When Li Shen ate the cheapest meals in the cafeteria, Jiang Miao brought him food prepared by the family cook. When school bullies cornered Li Shen, Jiang Miao fought them off to save him. When someone groped Li Shen while he worked a night shift at a nightclub and he kept quiet for the money, Jiang Miao appeared like a godsend and used his family's influence to force the culprit to apologize... Jiang Miao got his wish and became Li Shen's boyfriend. When Li Chou returned from abroad, Jiang Miao planned to dump Li Shen in front of him and watch him suffer and fall apart. But after Li Shen took him to bed for the first time, Jiang Miao got a taste for it. By the time Li Chou returned, he couldn't bring himself to break up with Li Shen. System 111: Aaaah! How can the protagonist shou not break up with him? Li Shen: Don't worry. If he won't break up, I will. * Ming Zhao had his memories erased by the director of the Quick Transmigration Bureau and was punished by being sent into a small world to play a nasty protagonist shou. He was paired with a protagonist gong of questionable character, forced into a painful romance, and destined to love the protagonist gong without being loved in return. Fortunately, the gorgeous gong he'd won over came to save him. Ming Zhao: Boohoo, Li Shen doesn't mind that I'm nasty. He went above and beyond to act out a secret romance with me without letting System 111 find out. I love him even more after every world! Reader's note: The shou has amnesia. Even though he doesn't remember the gong, he can't help being attracted to him. The shou is kind by nature; his nastiness is just an act. The gong knows the whole story, so he wants the shou to work on his problems, not deliberately torment him. Theme: Love others, love yourself