Gochuumon wa Usagi Desu ka? parody by Na! of The Crocodile Who Dies in 100 Days. Chino gets into debt while trying to get more business at Rabbit House.
Alternate titles: Chino-chan Owes ¥3,000,000,000 in Debt, Chino-chan Has 30 Days to Repay ¥3,000,000,000 in Debt