Super Power, I Just Went into the Sea and My Girlfriend Said She Was a Monster

[Cthulhu, urban superpower, not brainless, systemless, decisive in killing, stable in updates, slow to warm up in the early stage] Martial arts practitioner Zhang Huaian stayed up late reading a supernatural novel. He was so frightened by the thrilling scenes in the novel that his eyes went dark and he accidentally traveled to another world. It starts on hell difficulty. The original owner owes a huge loan, and the original girlfriend is also breaking up. In order to repay the debt, Zhang Huaian joins a mercenary and takes on the task of huge bonus: "Salvaging the recently lost nuclear submarine in the Mayana Trench" Zhang Huaian thought it was just an ordinary mission, until he entered the nuclear submarine and found that the world seemed... Not normal. Evil gods invaded and deformed monsters. The constant encounters brought Zhang Huaian to the verge of collapse. When he was about to die, his future self appeared in his mind. "Run, your girlfriend is a shemale!" "Don't listen to the whispers in the sea!" "Don't trust me in the future!" There are countless versions of him in the future, some giving seemingly advice, and some giving deadly lies. Is it true or false? The more Zhang Huaian explores, the more doubts he has in his mind. It seems that he will become abnormal in the future. When he is thinking, A voice came from the radio in the cockpit of the nuclear submarine: "No matter what, don't let them land on land!" "Keep them off the land!" "Don't... "