第 4 集: 選擇友情還是舉報蜜蜂，紫苑追趕鼠
2011年7月29日 播出
Faced with the decision to either stay friends with Nezumi or tell No.6 about the Bee, Shion finds himself running after Nezumi. (Source: No.6 Wiki)
Faced with the decision to either stay friends with Nezumi or tell No.6 about the Bee, Shion finds himself running after Nezumi. (Source: No.6 Wiki)