Well, this is definitely worth watching, ESPECIALLY if you're a Free! fan. While the craze might have passed, this is still a visually stunning anime, and in watching this, your 30 seconds will not be wasted at all. There isn't really a story line, but you still can't blink or you'll miss something. The art is just simply stunning-- the water and characters are beautifully drawn as usually, and everything is clean, colorful, and appealing to look at. The sound is upbeat and matches the animation very, very well. The characterization was also good. Somehow, in 30 seconds, they managed to bring back a whole waveof nostalgia from the first time that I saw the show. It was pretty nice and all the characters fit their usual roles perfectly.

Overall, that was a ton of fun to watch-- some of the best 30 seconds I've ever spent.

I would recommend this if you: like Free!, like gorgeous animation, have 30 seconds, you like hot shirtless guys

I would NOT recommend this if you: didn't like Free! at all and don't want to see any more of beautiful, precious cinnamon buns being hot and shirtless XP

Have a great day everyone!