underwater city

She lived a crazy and difficult life in the human world, and after several suicide attempts, she succeeded. No, that's what she thought. However, the female protagonist accidentally died in the sky, and her soul and body were transported to another world, which was called the "Sentinelverse" in the human world. This is the story that unfolds when the multi-talented female protagonist joins the BTS team, which is located at the highest point in the center.