S1·E34 Ahem! Showa Era Okita-kun!!

Hibari and Kōsaku try to convince Tsubame to date Kaji, but she refuses as she prefers honourable men like Okita Sōji. Kaji's illness turns out to be a Coughing Bug that made Kaji cough whenever he got excited. Despite still being ill Kaji insists on fighting the final round of the match but cheats by claiming he has tuberculosis.