[Crossover] Daily Life of a Mary Sue

[Updates whenever inspiration strikes] An thought she'd merely transmigrated into a parallel version of Japan, where she had three overpowered older sisters. That was until she found out that Yukimura Seiichi lived next door, and that this world had the Sword of Damocles. Prince of Tennis and K? So this wasn't an ordinary parallel world after all. It was an anime universe. And the Sword of Damocles only took a chunk out of Kanagawa instead of wiping it out completely, all because of her eldest sister. In the original series, what could possibly withstand the devastation of its fall besides the Slate itself? An (muttering): Mary Sue. Isn't this a Mary Sue character setup? (After looking up the definition) Eldest sister: Great. That's what we'll call you from now on, Mary Sue. An: … * Crossover with various sports and supernatural power anime, as well as the game Princess Maker 5. * The protagonist has no romantic pairing. The crossover sections are entirely friendship-focused, while the game storyline includes some non-platonic feelings. All canon pairings are preserved. * Slow-paced, everyday-life story. * I'd like to recommend the story next door, Anya and Conan. As the name suggests, Anya and Conan switch souls ←_← Due to review issues, I couldn't use that title anymore. It's now called [Conan] The Science of Mind Reading, and the main story is complete and ready to read. * Gojo Satoru and My Cat Switched Souls is set in the same world as Chapters 8-18. The blurb is below. There's something wrong with my cat. I'm not bragging, but my cat is the smartest cat in the world! Nani's IQ is at least that of a four- or five-year-old child! Nani can open doors, use the toilet, turn on the TV and watch it, and doesn't struggle when I bathe her. When I fail an exam, she comforts me. She's beautiful, adorable, and well-behaved. She's the best-behaved cat in a thousand. But lately, Nani has been acting like an ordinary, ill-tempered, disobedient cat. All she does is eat, drink, and use the litter box, then try to escape and wreck the furniture. Is she going through a rebellious phase? * Gojo Satoru woke up one morning and found himself turned into a cat. An ordinary cat. No Six Eyes, no Limitless technique. Looking closer... he was a female cat?! What happened to his body?! * Nani woke up as a human, with white hair and blue eyes. The cat turned into a human?! Even a smart cat with the IQ of a four- or five-year-old child had no idea what to do in this situation. She flopped onto the bed, looking utterly miserable. No fluffy tail, no soft, smooth fur except on her head, and the worst part was that when she got hungry, there was no more Mana's cat food! QAQ Mana... "Satoru, what are you doing...?" Suguru Geto had come to see why Gojo Satoru had skipped his mission for the whole day. He opened the door and saw his friend lying on his side on the bed, looking more depressed and miserable than ever. His eyes were even brimming with tears. What didn't match his mournful upper face was the drool at the corner of his mouth. Suguru Geto: ...?! Oh no. Had using Limitless finally fried his brain? Theme: Become a better version of yourself