From what I gathered, the poison that affected Seto has no known cure. You can use a soft on him, but the poison would almost instantly turn his blood back into stone. Making him go through the painful process all over again.
First panel. First line in Barret's second dialogue. Is there supposed to be a random apostrophe after that ellipses?
Cloud's technically right that he's not crying because there aren't any tears, but being stuck with Cait would make someone cry. Soft won't cure Seto from corniness!! Or poison. Or all those arrows in his legs and stuff.
Buggy? Is that what happens when you don't test out your machinery?