The Villainess Extra's Guide to In-Game Purchases

As soon as I made 2.2 billion won through cryptocurrency, I found myself in the body of a villainous extra in a game I used to play. On the day I hit the jackpot with crypto, I was suddenly transported into the game I had been enjoying the day before. In the game, I was destined to be used and then killed by the villainess in the early stages. To avoid this fate, I betrayed the villainess, Cleora, but was still killed in the end. However, after returning to the first day I transmigrated, I gained the ability to use the 2.2 billion won I earned in real life as currency in the game's cash shop. With such an enormous amount of in-game cash, will I be able to survive until the end this time? (Source: Kakao Entertainment Corp., translated)