Ok so, let's see. Kintarou / Nakagauchi seem to be a perfect pair for this. Kintarou could cover a lot of space in the court (...or wtv, I'm too lazy to check how it's called) with his ¨clones¨ and his ability to return 10 bao, Nakagauchi (with his amazing precision) would be an amazing setter (and his 187 cms tall should make him pretty good blocking at the net), and Kintarou with his jumps and his great power (not to mention, his Super wbahjfasf Smash). Both of them should also have the advantage in long matches against most pairs. Sounds like an easy match for them, right?
Wrong.
Against them is Amane, who doesn't have his long racket any more, but considering he's 180 cms tall and he's used to do it, he should still block a lot of shots. Let's also mention that he did a 1 handed volley against Momo's JK and Kawamura's Hadou back in Kanto, so he clearly can resist a lot of power (he surely has improved a lot since then). Kintarou's Super Smash might be still a lot for him tho, but I'm pretty sure he won't be overwhelmed by his normal smashes.
His partner is Hara, who may lack in speed in order to defend his opponent's shots, but his high mental should make him adapt to any shot the other pair has except... Kintarou's signature Smash. Hara also has his own signature smash, the Moukohan, which should be pretty hard to return (although, even if it connects several times into his opponents bodies, it'll never KO the likes of Nakagauchi or Kintarou). With high power and stamina, he won't have any trouble playing long matches.
But wait, this isn't all, I still haven't mentioned this pair's biggest quality: the puns.
Amane is known to be constantly saying puns (hell, his special move is Pun Destroyer or something like that), almost 80 in a single day, and if Bane isn't there to hit him and stop him, I would expect this number to be way bigger. Hara is an even better comedian, and he can fit the role of the Tsukkomi a lot better than Kurobane (considering he won't hit David, he'll just counter attack with another pun). This pair's puns are not to be underestimated, and someone as cheerful and absent minded as Kintarou might be their perfect target, the puns might be too much for him (let's also remember that he completely lacks doubles discipline and might not even understand how volleyball works and what a setter is). I doubt he'll be able to defend properly or hit his signature serve/smash if puns are involved. Kintarou shouldn't even be able to pun pin the ball properly.
Also, let's remember that this is beach volleyball, and that means that Hara will play shirtless. That, in my opinion, gives this pair the edge over their opponent. Hara/Amane win this.
