Meaning of 何もなし

Question

ひっさびさに会えるってのに、何もナシじゃつまんねーだろ (Persona 5 Scramble)

I can't seem to wrap my head around the 何もなし. Specifically how the 何も fits with the なし and the adjective being in the negative form at the end.

Answer 1

何もナシ means "(there is) nothing at all".

• 何も is a negative polarity item, which is always followed by a negation (ない, ぬ, ず, ...). Please see: The reason for using 何も+negative, but 何でも+positive
• This なし is a classic version of ない, but it is still used when brevity is important. Please see: What form is あり?

なし on its own means "there is not", but 何も strengthens the meaning ("there is nothing at all").