Review of "Reign Storm", the first wellness energy drink to arrive in Japan! "Guava Strawberry" and "Harvest Grape" available from August 19！

The Bon Festival is over, but the heat wave has not ended. Even if you are ready to get back into the swing of things after the vacations, it is inevitable that you will get sick in this sweltering heat. However, people want to stay healthy and beautiful. "Reign Storm," an energy drink brand perfect for such people, has made its first appearance in Japan. Reign Storm Guava Strawberry " and " "Reign Storm Harvest Grape," which went on sale on August 19, 2025 (Tuesday), will be reviewed.

Reign Storm is the first to arrive in Japan! Review of the wellness energy drink!

Saiga NAK

We review the wellness energy drinks " Reign Storm Guava Strawberry " and " Reign Storm Harvest Grape ". Reign Storm, an energy drink brand that is gaining popularity in the U.S., especially among Generation Z and millennials, has landed in Japan for the first time.

The packaging features the letter " "R" with a crown on it, which may have been inspired by the word "Reign," meaning "reigning. The package is decorated with vivid colors and illustrations of fruits of each flavor.

Check out the nutritional information.

Next to the package, let's check the nutritional information. The ingredients per 250 ml bottle are as follows. The nutritional ingredients are the same for both flavors.

• Energy: 0 kcal
• Protein: 0g
• Fat: 0g
• Carbohydrate: 2.5 g (sugar: 0 g)
• Salt equivalent: 0.5g
• Zinc: 3.8 mg
• Niacin: 11 mg
• Pantothenic acid: 1.0 to 6.0 mg
• Vitamin B6: 1.2mg
• Vitamin B12: 1.5 to 3.0 µg
• Vitamin C: 50 to 110 mg
• Vitamin A: 250 to 460 µg
• Biotin: 25 µg
• Caffeine: 100 mg

Saiga NAK

Compared to other energy drinks, the ingredients are a bit quirky. That's also true. This product, a wellness energy drink, is a food with nutrient functionality that supports beauty and health. It contains zero calories, zero sugar, and no preservatives. Reign Storm also contains vitamin C, vitamin A, vitamin B6, niacin, and zinc, and can be "charged with beauty" at various times, which is the appeal of Reign Storm. Note that Reign Storm contains 100 mg of plant-derived caffeine, so be careful if you are not a fan of caffeine.

Now, let's try it for ourselves. What does it taste like?

Saiga NAK

Now that we have confirmed the nutritional ingredients, let's get down to the actual tasting. Let's start with the "Guava Strawberry".

Saiga NAK

The color is a mild orange with a hint of peach. When you put your nose close to it, you can faintly smell the aroma of strawberries. The overall impression is gentle.

Next, let's take a look at "Harvest Grape".

Saiga NAK

It was poured into a glass with a sizzling sound. While the wine-like deep red color of the grape looks good in the glass, it is characterized by a folksy aroma that reminds one of carbonated grape juice.

Saiga NAK

"Guava Strawberry" is less carbonated and very light on the palate. On the other hand, it has an intense sweetness that is hard to believe that it contains zero calories, and the sweetness lingers even after swallowing. It is more like a juice than a fruit drink.

"Harvest Grape" has a strong carbonation on the tongue. Combined with the sweetness of concentrated juice, it stimulates the senses and awakens the senses. It is a very satisfying dish that can be enjoyed with all five senses.

"Reign Storm" will make its first appearance in Japan on August 19, 2025 (Tuesday). It will be sold at convenience stores and supermarkets nationwide. In order to enjoy and survive this summer, it is essential to maintain beauty and health. Why not buy this product instead of your usual beverage to reward yourself or when you want to get into the swing of things and " recharge" yourself with energy and nutrition?