No. The toxin in Monarch Butterflies is mild. Fort the most part they just taster bad, though eating enough of them could make you sick.
plot and setting
Nothing I don't think.
Nothing happens
you die
pain
You Die
you die...
You can get chemical burns along your throat and stomach if you swallow lye.
You burp bubbles
It depends on how much you swallow. If it is a large amount, you could get diarrhea and/or vomit.
This too will pass.
Your ink drys out.