Said comic doesn't even have to be published yet. Just tell me how long it is, whether that's in chapters, pages or stories.
I'll go first! I already published or hinted at it quite yet, but I do have a Magical Girl comic that's also styled as a Coming-of-Age. It's cut up into 10 parts, and I've already written out the ending and epilogue.
You can see the posters here:
As of yet, I've written out 265 chapters for this story. I think it's my longest story yet
So what's the longest comic you've made so far~?