Honkai: Star Rail: Reincarnated as a Slime and Used as Firefly's Pillow

[Honkai: Star Rail fan fiction + Slime + cute pet daily life + play the pig to eat the tiger + one heroine, Firefly] Su Che opened his eyes after dying and found that he had become a blob of blue jelly. From the start, he fell into Firefly's bathtub and nearly got scrubbed into a dish sponge. Luckily, he gained a sharp-tongued AI in his head: the Great Sage. "Great Sage, analyze the situation!" [Notice: A young woman is poking you repeatedly with her fingertip. Suggestion: play dead.] From then on, an unidentified life-form joined the Astral Express. March 7th treated him like a stress ball, squeezing him so he sprang back, then squeezing him again. Dan Heng used him to wipe down his spear: smooth and lint-free, even better than chamois leather. Firefly hugged him to sleep every night. He was soft, cool, and could adjust his temperature automatically. Then one day, the Stellaron Hunters laid siege to the train. Just as everyone was losing hope, the blob of blue jelly swelled into a cosmic beast and swallowed the flagship whole. The entire universe was stunned. March 7th: "Wait... Did I use you to polish my shoes before?"