If it's chocolate, the only possible answer はいい！

What about ほしい／ほしくない ? Can it be used in this situation as well?

Isn't いる to be? Or is this a verb with another meaning, but it looks the same?

Can you please explain the 々ヽヾゝゞ characters?

And if i wrote 野ゝ would it be 野の?

The opposite dynamic happens with トイレ行きたい becoming "I need to go to the bathroom".

I want it because I need it.

chokoreeto ga iru

I usually just say 大丈夫です