Drown in Yesterday's Sea

Xiamen, Fujian Province, 2024. One day, 19-year-old Xiamen University student Gu Mengzhi meets a sea spirit named Coral, and the two quickly become close. However, as their bond deepens, a stranger appears and disrupts everything. The stranger seems to want to kidnap Mengzhi for some reason. Soon, Mengzhi realizes she's been caught up in a conspiracy. What's really going on? Will Mengzhi and Coral be able to uncover the truth and get away safely? [Translated from Steam]