The Villainess Extra's Guide to In-Game Purchases

On the day I struck it rich with crypto, I was suddenly transported into the game I had been playing the night before. To avoid the fate of being used and then killed by the villainess Cleora—a typical mid-game plotline—I betrayed her... only to be killed anyway. But then, I returned to the day I first got possessed. This time, I gained a special ability: I can use the 2.2 billion won I made in real life as cash in the game’s shop. With a massive 2.2 billion won in cash to spend, can I survive to the end of the game this time? (Source: Kakaopage, translated)