Hi,
I am trying to find a manga that I saw once but don’t know how to search for it again. Keywords have failed me. My google-fu is too weak.

The manga I am looking for is kind of a parody where a girl from a war manga is mistakenly thrown into a harem manga. The characters seem to be aware that they are in a harem manga and has to try their best to put themselves into situations with protagonist-kun. They are all afraid that if they don’t do it well, the manga’s popularity will decrease and they will be removed from the story.

I have been trying to find this story for a while now, through multiple search methods; I even used Bing! Please help, thanks! 😢

Not exactly how you're describing it, but could it possibly be Mission! School?

That isn’t the manga. It is new, maybe in the last 12 months, at least the English translation that I saw.