[Book Transmigration] The Protagonist's Adorable Pet

Gu Yishu transmigrated into a book, but he doesn't know he's in one. He didn't land in a very good place, and so he became... Mo Fengye (confused): Hm? Xiao Yin, what are you doing? Gu Yishu, eyes streaming with tears but unable to resist his instincts as all four paws dig furiously: Squeak, squeak, squeak! Help, I can't control my hands QAQ Mo Fengye pinched the back of the neck of the gray ball of fluff and lifted it out of the pit, muttering to himself: Since when do little ones like digging holes so much? Gu Yishu: Squeak, squeak, squeak! I don't like digging, I don't, I don't, I don't... But I don't know why I can't control myself, sob sob sob QAQ Is there something wrong with the kind of adorable pet I have? In short, he's actually transmigrated into the body of a Celestial Rat, a genuine treasure-hunting tool. Gu Yishu: The name sounds so impressive, and the skills are so useful, but at the end of the day I'm still a rat, squeak! Reading Guide 1. The bottom transmigrates into a beast, but he's not called a beast, much less a beastly teacher. He can eventually transform out of beast form, though essentially he's still a beast. 2. Transmigration into a book, one-on-one romance, bottom's perspective. The bottom isn't the only person in the story who transmigrated into a book. 3. Pairing: gentle, scheming, loyal-dog top x hapless, flirtatious, fluffy, adorable pet bottom. 4. This story is indulgent, sweet, and full of affection! 5. This story was inspired by a line in a short blurb, and is not original. However, the story itself is absolutely original. The author is so adorable, won't you come give me a kiss? Theme: