Sadaharu 28 (定春28号) was Kagura's 28th pet. She mistook Sadaharu 28 for a kabuto mushi aka Rhinoceros Beetle and attempted to use him in a beetle fight. However after Okita Sougo arrived with his massive beetle, she became too agitated before the fight even started and accidentally killed Sadaharu 28 by squashing him in her hands, just like all her previous pets before him.