REIGN STORM GUAVA STRAWBERRY (Japan)

Flavor of REIGN STORM Guava Strawberry (Japan)

Opening the can releases a sweet, milky strawberry aroma.The color of the drink is not the flashy pink one might imagine from strawberry or guava, but a bright, slightly orange hue that gives a natural feel. Let's give it a taste.

When sipped, it delivers a sweet and tangy strawberry candy taste, followed by a lingering guava flavor in the aftertaste.

The subtle, natural strawberry flavor is complemented by a slight hint of artificial sweetener, while the refreshing guava note comes through pleasantly. It tastes consistently good from chilled to room temperature.

At the same time, the flavor remains fairly mild, so REIGN STORM Guava Strawberry is not aimed at those looking for bold or intense energy drink flavors.

That said, it is far from the typical “light and bland for women” approach seen in traditional Japanese beverages. Because of this, many people may find themselves uncertain when evaluating both its taste and repeatability.

Energy Ingredients of REIGN STORM Guava Strawberry (Japan)

Contains 100mg caffeine, ginseng, green tea, guarana, and zinc.

As a functional food for nutritional purposes, explanations about its ingredients are displayed abundantly throughout.

Design of REIGN STORM Guava Strawberry (Japan)

The design features a white can with a textured, rough surface, a pink logo evoking strawberries, and the flavor's fruit image centered, creating a clean and distinctive impression.

The back of the can displays functional icons similar to the original U.S. version.

The Japanese text under the icons may feel slightly off or cheap, which is a common trait of beauty- and wellness-focused beverages.

Background of the REIGN STORM Series

When it comes to American wellness-focused energy drinks, CELSIUS has risen to the third largest share and reigns as the undisputed leader. REIGN STORM was launched by Monster Energy as a new brand to compete with it.

Compared to the U.S. version of REIGN STORM Guava Strawberry, the resemblance to CELSIUS is evident.

Health consciousness in the U.S. has been increasing year by year, and CELSIUS, aligning with this lifestyle, has gained explosive popularity and rapidly grown as a brand favored by young people.

Meanwhile, Monster Energy recognized the strong demand for traditional energy drinks and decided to launch REIGN STORM as a separate brand, introducing new flavors one after another. The series is now available in Europe and Oceania, and has finally arrived in Japan.

Let's compare the Japanese and American versions of REIGN STORM Guava Strawberry.

The main differences are the flavor image and the logo color, which has been changed from a mirror silver like CELSIUS to match the flavor color.

Due to Japanese packaging regulations, fruit images can only show cross-sections for 100% juice products or must be flat illustrations, resulting in a slightly less detailed image. This is unavoidable.

The colored logo is not unique to Japan. The same flavor-colored logo will be adopted in Europe and Oceania as well, and eventually in the U.S., where CELSIUS has a strong presence.

While the REIGN STORM series previously gave the impression of being similar to CELSIUS, its appearance is gradually being adjusted.

The U.S. version of REIGN STORM Guava Strawberry underwent a major design update in July 2025. It is likely that future overseas releases, including Japan, will adopt this bolder flavor-color design.

Will Wellness Energy Drinks Take Root in Japan?

Before this launch, there were hints of REIGN STORM entering the Japanese market several years ago. However, no further developments were seen, and at the time it seemed more efficient for Monster Energy to focus on its main brand. Now, as the REIGN STORM series expands globally, it has finally arrived in Japan.

In Japan, energy drinks that emphasized differentiation through beauty, health, or wellness themes have appeared in the past, but none of them have established a lasting presence. Launching energy drinks with these themes is inherently challenging, and even in the U.S., CELSIUS only succeeded by chance, quickly gaining market share. Overall, this remains a very difficult category.

The Japanese version of REIGN STORM appears to target women, with a smaller size that affects cost performance. While additional flavors may be introduced in the future, it is uncertain how long the brand will continue.

Everyone's REIGN STORM GUAVA STRAWBERRY (Japan) taste and ingredient opinions and ratings

melody ：August 21, 2025

★★★

LAWSONでモンスター買うとついてくる無料引き換え券で
飲んだ
まぁ美味しいか不味いかで言えば美味しい
味も良い しかし今でのエナジー系に慣れ親しんでる人が飲むと物足りなさは感じるかも 量も少ない気がする
何を求めるかに寄って別れてくる気はする
自分は今まで通りモンスターで良い
たまにRedBullかな

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