Fortunately, the imo-youkan he ate had expired and wore off before either he could do harm to them and is saved by Zelmonda before the Carrangers could do him harm.
The imo-youkan had expired. This was fortunately. He ate youkan. The imo-youkan wore off. This was fortunately. He ate youkan. Either he could do harm to them. Either he is saved by Zelmonda. The Carrangers could do him harm.