I Bought a Lucky Carp Male Lead

In the original story, the lucky male supporting character grants the female lead every wish and gives her everything. Even after exhausting his powers and being transformed back into his original form for her, he still can't stop her from running off with the mortal male lead. Wen Han, who starved for three years in the apocalypse, transmigrates into a book and becomes the unlucky female supporting character. By chance, she also buys a little koi fish that has been turned back into its original form. In the original story, she is the one who makes endless demands on the koi to grant her wishes, tormenting it to death. The little koi closes its eyes in despair. The torment it expects never comes. Wen Han takes loving care of it, feeds it its favorite snacks, gazes at it adoringly by the fish tank, and even says sweet things to it! The little koi: Oh my gosh, she actually has a thing for a fish. The little koi: But I'm so embarrassed! o(*////▽////*)q! Wen Han greets her new life with delight. When she gets to the cafeteria and all the dishes are gone, she can happily eat five bowls of plain rice. When the clothes she buys arrive in the wrong size, she tailors them into something even more fashionable. She doesn't think she's unlucky at all. Instead, she sees it as a gift from heaven. Especially since she can raise a pet of her own! After being all alone in the apocalypse, she finally has a companion. Every day she presses close to the fish tank and tells it how much she loves it. All it has to do is keep her company. She has no other wishes. Until one day, the fish tank shatters, and a young man with a beautiful fish tail appears in front of Wen Han. He flicks his tail haughtily. "I heard all your confessions. I accept." Wen Han: "?" After enduring every kind of torment for the male lead, the female lead finally realizes how good the lucky koi supporting character was. When she tries to find him again, she sees him holding a baby koi in his arms, wagging its tail wildly as it snuggles up to its wife and begs for affection. A low-desire, laid-back, food-loving female lead × a slightly haughty koi male lead