Nihon meisaku minwa shirīzu daichi o mamoru shiroi hana

Kōkishin ōseina rōjin ga kodomo-tachi ni kimyōdaga utsukushī hana o okurimasu. Shikashi, naze kodomo-tachi wa sonogo sugu ni nazo no suiminbyō ni kakatte shimau nodeshou ka?

A curious old man gives strange but beautiful flowers to children. But why do all these children fall to a mysterious sleeping sickness soon after?