We Didn’t Die That Rainy Night, We Made a Vow

Fantasy With a Creative Premise and a Cautious, Survival-Savvy Protagonist

Looking for books like *From a Gu-raising Boy in the Deep Mountains to the Supreme Emperor Gu Immortal (Peerless Gu Immortal)*. I want an imaginative fantasy story where the protagonist has a Gu-insect fusion System and is cautious, with a deep understanding of the art of keeping a low profile. No matter how strong he gets, if he can take someone out with a sneak attack, he absolutely won't confront them head-on. Recommendations, please.