The story revolves around Takumi Tsuzuki, a boy who lives with his older "sister" Otome, although the two have no blood ties between them. Otome manages a run-down confectionary store called Stray Cats. One day, Otome picks up a mysterious beautiful girl off the streets.

Mayoi Neko Overrun! / Stray Cats Overrun! (TV) Limited Edition: Complete Box Set (DVD) Episode titles:

• 1. Stray Cats, Dashed
  
• 2. Stray Cats, Smiled
  
• 3. Stray Cats, Found
  
• 4. Stray Cats, Undressed
  
• 5. Stray Cats, Cried
  
• 6. Stray Cats, Troubled
  
• 7. Stray Cats, Rode
  
• 8. Stray Cats, Drawn Out
  
• 9. Stray Cats, Swam
  
• 10. Stray Cats, Waited
  
• 11. Stray Cats, Shattered
  
• 12. Stray Cats, Decided
  
• 13. The Stray Cats Wrapped Up