Dimensional Gacha in Honkai Impact

Takatsuki Sen traveled through time. Good news: He had no attachment to his own world. Bad news: He traveled through a world of collapse. Good news: There was a system. Bad news: The system was written by himself. As an ordinary person, Takatsuki came to Changkong City, where the survival rate of ordinary people was infinitely close to 0. He faced a major choice in life. Should he escape from Changkong City before the third collapse and live his life as an ordinary person, and live in fear, and then wait for the protagonists to solve everything? Or should he personally throw himself into the collapse, interfere with the main storyline, and use his own power to seek a hope of survival? Takatsuki chose the latter. The only reason for the boy who had no worries in this world to survive in this world was to survive itself. World 1: Honkai Impact 3rd World 2: Jojo's World 3: Honkai Impact 3rd World 4: Danmachi — Description from novelcodex.org