This video was inspired by a post on Livejournal. Apparently a lot of people disagreed with the song choice in the new opening (like myself), and someone stated they might as well put Happy Days to the part where Ace comes in. So… that's what I did. Barely any editing involved - just putting the end of the opening to the song. XD
Also, I do love the animation in the new opening. I love the song too. Together it seems… a bit much. Just my opinion.