There's a certain comfort in revisiting childhood favorites. Ultraman Cosmos 2: The Blue Planet offered exactly that – a chance to reconnect with Musashi and his heroic alter ego, Cosmos. However, as someone who devoured the original series, this sequel wasn't without its flaws.

The movie starts strong, reuniting us with Musashi, now an astronaut, fulfilling his lifelong dream. The nostalgia factor hits hard, especially when a familiar alien threat from space throws him back into the role of Cosmos. The introduction of the underwater alien civilization, the Gyasshis, adds a fresh layer to the world-building, and their connection to the ocean resonates with the film's title – a beautiful reminder of the fragility of our blue planet.

However, the narrative stumbles a bit. The villain, Scorpiss, feels like a generic evil alien out to destroy everything. A more nuanced antagonist could have elevated the stakes. Additionally, the controversy surrounding the alternate version of the film, filmed due to legal issues with an actor, casts a bit of a shadow. While the new scenes with a young Musashi are well-done, it's a reminder of the film's troubled production.

Despite these shortcomings, Ultraman Cosmos 2 shines in its focus on environmental themes. The Gyasshis' plight due to pollution is a clear call to action for viewers to protect our planet. The bond between Musashi and Cosmos is also heartwarming, showcasing the importance of courage and selflessness in the face of adversity.

Ultimately, Ultraman Cosmos 2 is a fun, nostalgic ride for fans of the original series. While the plot may not be groundbreaking, the dazzling visuals, environmental message, and the ever-inspiring Ultraman Cosmos make it a worthwhile watch. Just be prepared for a familiar formula with a side of behind-the-scenes drama.