A Flavor Built on a Running Character Gag
Most anime collab proteins settle for chocolate with a character on the bag. This one goes further. According to a report from Japanese anime news site Anime Anime, the new "be LEGEND WPC Haikyu!! Gungun Yogurt Flavor" recreates the yogurt drink Tobio Kageyama is seen drinking during breaks in the series, with a gentle yogurt sweetness pitched at people who have never touched protein powder before. The brand frames it as an anytime drink: with breakfast, as an afternoon snack, or as dessert after dinner, not just a post-training shake.
The package art completes the bit. Kageyama sets and Shoyo Hinata spikes across the bag, a limited design that Anime Anime describes as fun to display as well as drink. be LEGEND, the protein brand run by Japanese supplement maker Real Style, released its first Haikyu!! protein earlier, and this second wave follows the same playbook with a deeper character reference.
What's Actually in the Bag
For a licensed collab, the nutrition panel is respectable. Each serving of roughly 20 grams carries 10 grams of protein, plus 400mg of calcium, 40mg of vitamin C, 4.0μg of vitamin D, and 0.24mg of iron. The report puts that against Japan's commonly cited daily guidance of about 60 grams of protein for adult men and 50 grams for adult women, the gap this kind of supplement is meant to close.
Every bag, regardless of retailer, also comes with a "protein textbook," a one-sheet insert covering protein basics and tasty ways to mix it. The first collaboration included one too; this edition gets a new design.
Six Stickers, One Catch
The collector hook sits behind a retailer restriction. First-production bags purchased from be LEGEND's official online store include one random waterproof sticker, sized to slap on a shaker bottle, from a six-design lineup: Shoyo Hinata, Tobio Kageyama, Toru Oikawa, Hajime Iwaizumi, Kenma Kozume, and Tetsuro Kuroo. One bag gets you one sticker, so completing the set means buying at least six bags and getting lucky with the random draw. Buyers on Amazon, Rakuten Ichiba, or Yahoo! Shopping (major Japanese e-commerce malls) still get the protein textbook, but not the stickers.
The protein went on sale July 16, 2026 at 12:00 p.m. JST for 2,480 yen, tax included, across all four storefronts.
Looking Ahead
The collab lands while the franchise builds toward a packed 2027. Haikyu!! The Dumpster Battle, released in Japan on February 16, 2024, passed ¥20 billion (approx. $130 million) at the worldwide box office. In 2027, the film Haikyu!! vs. The Little Giant pits Karasuno against Kamomedai, while the special anime Haikyu!! Bakemono-tachi no Iku Tokoro (roughly "Where the Monsters Go") covers the Fukurodani versus Mujinazaka match.
As for the protein itself, sales run through Japanese storefronts only, and no international availability has been announced. If you want to catch up on the series instead, the anime streams on Crunchyroll and Netflix, and Haruichi Furudate's original manga ran in Shueisha's Weekly Shonen Jump.