What was the main plot of the story?

'Little Buried Gummy Girl' was a Japanese light novel written by Kazuma Kamiike. The story was about an ordinary high school girl named Xiaomai, who was known as a "dry woman" because she had a pet at home that could transform into a cat. In an accident, the pet cat that was buried became a real pet cat, and she began an adventure related to cats. At the beginning of the story, Xiaomai was ostracized by her classmates in school because of her special identity and personality, which made everyone feel uncomfortable. Her good friend, Mei Ying, helped her to integrate into the class, but Xiaomai felt uncomfortable. After that, Xiaomai's pet cat mysteriously disappeared, and she decided to look for it. In the process of searching, Xiaomai met a girl named Kasugano Dome. She was a lively and optimistic person and Xiaomai's classmate. Kasugano Dome was curious about Xiaomai's special identity and began to have a good impression of her. In the process of finding the pet cat, Buri encountered various challenges and difficulties, including misunderstandings with his classmates, interactions with the pet cat, and the appearance of mysterious people. In the end, Osamu successfully found her pet cat and overcame her personality and psychological barriers to become good friends with Kasugano Dome. During this process, Osamai gradually discovered his feelings for Kasugano Dome, but he never had the courage to confess to her. At the end of the story, Oburi and Kasugano Dome spent a happy time together, overcame all difficulties and became a better version of themselves.