It's gonna be bittersweet to see this one go. While stories with time skips that cover several sections of the characters life have always appealed to me, works like this that manage to have a constant, steady flow of time are something else entirely; and that's without even mentioning how the author has kept it up for nearly a decade. I've been following this since the beginning, and just like the characters, I was in high school when this series started, was in college when they were in college, and now am working just as they are near the end here.
Chances are that between the recent shift to twitter one pagers/chapters and aging past the standard demographic of manga in general, I'll never get to age alongside another pair of characters like this. Here's to hoping these last few chapters gives us a satisfying conclusion to their story.