Haiwei Desperate Situation

All mankind travels to a strange ocean world and survives in the stomach of a giant fish named Titan Kun. Humans need to help Titan Kun remove harmful organisms from its stomach. Titan Kun looks for supply boxes for humans and helps humans develop. The creatures in this ocean world are all extremely large, and even parasites are far larger than humans. Humans need to constantly obtain supply boxes, upgrade their abilities and equipment, and fight against these creatures that invade the stomach of the Titan Kun. When everyone is struggling, our protagonist Bai Ye can hear the sound of the Titan Kun from time to time.