Start Cultivating a Billion-Dollar Girlfriend from 1 Yen

If you raise the favorability of the destined person to 100 points, you can withdraw 10 billion yen. How beautiful, how exciting. But Kamiya Yuu no longer felt as excited as when he saw the system for the first time. He shook his head and looked at the girl beside him. "Can you stop your heartbeat? It's disturbing me while I'm reading." The girl who stared at [Favorability: 1] spoke coldly and flipped through the library book in her hand. In the parallel world, how did you conquer this bad girl? Do you have any plug-ins? Or are you actually a master in the Galgame field? I really envy you. I am not so lucky. I am just an ordinary high school student who has a system that allows me to add attributes, extract special skills, and buy miracles.