第 663 集: 偵探少年們上山尋找甲蟲，卻發現受傷的Namatame

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The Detective Boys wish to capture a few beetles to bring to school, and as a result, visit Agasa's old friend in the mountains. The Detective Boys manage to find a bunch of beetles at night, but return to find Namatame injured. Namatame's last words are "Miyama Stag Beetle" before losing consciousness. (Source: TheTVDB)