Kashin is afflicted with a disease that will turn her into a cat if an antidote is not found, and Kada is still seeking the Crucial Ways to the Key of Peace, so he entrusts Kanu's group to go seek the ingredients for an antidote. At the same time, Choujou is plotting something between the Kingdoms, and Kashin may have been only the first in a line of dominoes set to fall.

B Gata H Kei (TV) Limited Edition: Complete Box Set (DVD) Episode titles:

• 1. Boy ♂ Meets ♀ Girl I shall have your "first time"!!
  
• 2. That's it! Let's go to the pool. You want to see my swimsuit don't you!
  
• 3. Closing the distance in the dark room! Club activity that's a little dangerous!?
  
• 4. Heart-throbbing Christmas Eve. What's the taste of the first kiss?
  
• 5. A Valentine of sweat and tears. With love, from Yamada!
  
• 6. Kanejō comes! I can't forgive that glitter!
  
• 7. Showdown in school swimsuits! I'll lose to anyone but you!
  
• 8. Yay, it's the school trip! There's no opportunity to be alone for the two of us...
  
• 9. How can this be! In front of everyone... Well, I didn't say anything about not liking him...
  
• 10. Kanejō's family. The glittering secrets of the celebrity brother!
  
• 11. Year 2 Class H's Christmas Eve. Take me to the bed
  
• 12. The world revolves for us. Farewell... B Gata H Kei