This was such a great finale to a series that ended up really growing on me. While the beginning definitely wasn't my thing, and it took me a while to actually understand what was going on, I ended up loving this series a whole bunch. I also just looved the colors and art style, especially as they went through all the eras one last time.

Spoiler

I also found this to be the most fitting ending, as they finally managed to get back to their own time while also keeping the friendship (or possibility of one) intact. While the ending has its melancholic caveats (Mac is still going to die too young, Mac + KJ don't remember their budding relationship, and all the fantastic stories and memories themselves are lost), it still carried the bright light of hope, that the friendship can reform. I just really loved it.