It’s not BL; it’s shounen sports anime, but the fact that this is all official art:

and this video (pretty crappy song, but the footage is what’s important) makes it pretty clear who the target audience is, and it’s not young boys ages 13-25.

It’s hilarious though, and you don’t have to understand tennis to enjoy it. In fact, it’s probably better if you don’t, because the tennis played in TeniPuri/Prince of Tennis is nothing like anything remotely physically possible.

Case in point: the first movie implies that the captain of the main team caused the extinction of the dinosaurs in some time-rift timeline-altering amazing smash. idek idek idek

You won’t lose anything by giving the first 10 or so episodes a try (it’s quite long, though; 175ish episodes for the first series, and then there’s ShinTeniPuri going on now and the Prince of Tennis musicals which are on their 6th Seigaku cast since 2003). It’s got a really well-known voice cast, and there’s a ton of CDs and radio bits out there for the guys.

Plus, legitimately not lying when I say this series changed my life. If I’d never gotten into it, I wouldn’t be where I am today. This series all by its lonesome is the reason I’m in Japan now. So yeah, I think it’s ‘all that good’ :3