No, that's not it.

No, that's not it.

It couldn't have been that they couldn't take the climate of Japan!?

Tokoro Juusaburou, being jealous of those two's popularity, poisoned their feed.

And there was another time, where not a single person came to the zoo.

I-It couldn't have been that the panda boom ran out!?

A desperate Tokoro Juusaburo had taken to running laps inside the zoo all fundoshi'd up.