There could be a Gokaiger fanfiction that focuses on the backstories of each individual Gokaiger. For example, how they came to be chosen for the mission and what their lives were like before joining the team. This would give more depth to the characters and make the story more engaging.
I'm not entirely sure if 'Uchuu Kaizoku Sara' is available as a PC visual novel. There are a large number of visual novels out there, and new ones are constantly being developed. If it's a relatively unknown or indie title, it might be harder to find. You could try searching for it on gaming forums or communities where fans of visual novels might have more information.
You can start by looking on fanfiction websites like FanFiction.net or Archive of Our Own. These platforms have a large collection of fan - made stories, and you can search specifically for Gokaiger fanfiction using the search bar.
It could stand out due to its ability to appeal to a wide range of audiences. For instance, it might have stories that are not only action - packed for the younger viewers who love the battles, but also have deeper themes and character relationships that older viewers can appreciate. This combination makes it more inclusive and different from other series that may target a more specific demographic.
One idea could be a crossover with the Power Rangers. The Gokaigers could team up with the Rangers to fight a common enemy that threatens both their universes. Maybe they start off as rivals, not understanding each other's ways, but then learn to work together as they realize the scale of the threat.
One possible plot is that the Lion Guard discovers some strange energy signatures that seem out of place in their world. These turn out to be related to the Gokaigers' power sources. As they try to figure out what's going on, the Gokaigers also detect a disruption in the balance of their power. They meet up and find out that a powerful enemy is trying to harness the combined power of both the Gokaigers' ranger powers and the magic of the Lion Guard's world. So, they have to put aside their differences and work together. The Lion Guard can use their natural abilities like Simba's roar, while the Gokaigers can use their mecha and ranger attacks to battle this new threat.
The 'Super Sentai' series generally involves a group of heroes with special powers or abilities who team up to fight against various villains and threats to protect the Earth or their respective worlds. Each season in the 'Super Sentai' franchise has its own unique story, characters, and themes. The 'Full Story' would likely be an in - depth exploration of the entire history of the series, including the origin of the Sentai teams, their battles, and how the franchise has evolved over time.
To be honest, I don't think there are many. Super Sentai is more popular in TV shows and merchandise. But you might find some indie or fan-made visual novels if you search hard enough.
How about including characters from Sailor Moon? It would be really interesting to see the Gokaigers interact with the Sailor Scouts. Maybe they could learn some new strategies from the Scouts' magic-based attacks.
The main characters would be a mix from both sides. From the Gokaigers, we would have Captain Marvelous, who is bold and adventurous. He would be a great counterpart to Kion from the Lion Guard. Kion, with his sense of responsibility and the power of the Roar, would be a central figure. Also, other members of the Gokaigers like Joe Gibken, who is more of a tech - savvy character, could interact with the Lion Guard in interesting ways. For instance, he could help the Lion Guard understand some strange technological threats using his knowledge, while the Lion Guard could teach the Gokaigers about the natural magic and powers in their world.