A: Thank you I expect more about the missing info & detailed explanation from you. Please Don't leave. Thank you again
B: I've been waiting for the anime adaptation since years so I'll stay be sure of that XD!
Could I say the structure is: I will stay (and will) be sure of that?
It is poorly punctuated and hence hard to read. e. you can be sure that I will stay.
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It is poorly punctuated and hence hard to read. Apparently it means "I'll stay, you can be sure of that!", i.e. you can be sure that I will stay. Some kind of punctuation is needed between "stay" and "be".
"since years" is wrong (should be "for years").