In This Apocalyptic World of Torrential Rain, I Watch as a Scumbag's Family Turns on Each Other

My boyfriend let his parents stay at my place to save on accommodation costs. Then, a sudden, devastating rainstorm hit, and his parents feasted at my house, blaming me for not stocking up on food and forcing me to go out and find some. That day, my boyfriend said someone was delivering food downstairs, so we went down with him. He pushed me into the water, and I drowned. When I opened my eyes again, my boyfriend suggested inviting his parents over for a trip. I laughed and said, "Call them over quickly, they can stay at my place!" I immediately ordered a bunch of stuff, deliberately letting the people in the neighborhood know I had food, inviting them to come and get it. Reborn, I rented a place again, living a comfortable life in a high-rise building.