One way could be that Naruto discovers some ancient Jedi teachings in a hidden scroll in the Ninja world. He uses his chakra control skills, which are similar to the Force control in a way. He might shape his chakra into the form of a lightsaber blade, perhaps with a unique color based on his chakra nature, like a blue blade if his chakra has a water - like quality. Then he starts to train himself in the new - found 'lightsaber - like' combat style, combining it with his existing ninja moves.
One plot idea could be that Harry is transported to a Star Wars - like universe and has to learn the ways of the Force and lightsaber construction to get back home. Another could be that he discovers a hidden chamber at Hogwarts that contains the knowledge and materials to make a lightsaber, and he uses it to defend Hogwarts against a new threat.
If Harry Potter were to make a lightsaber, he might first need to study the principles of the lightsaber. Since he's good at researching in the library at Hogwarts, he could look for magical equivalents. He could perhaps find a way to infuse the essence of a powerful spell into a crystal, similar to the kyber crystal in Star Wars. Then, using his wand - making skills, he could fashion a hilt around it and use a spell to create the blade of light. This would be a cross - over of magic from two different universes, but that's the fun of fanfiction.
One popular 'Harry makes a lightsaber' fanfiction might be found on platforms like FanFiction.net. You can search there using relevant keywords. There are often works where Harry discovers the technology or magic to create a lightsaber in a unique crossover universe.
Ezra might become more confident. With a harem of characters around him, he would constantly be getting support and admiration. This would boost his self - esteem as he realizes his worth not just as a Jedi but also as a person. For instance, when he faces challenges, the women in his harem would encourage him, making him more determined to succeed.
Well, in theory, it could. Fanfics often like to blend different fictional universes. However, in the official Harry Potter lore, there are no lightsabers. But in a fanfic, an author could come up with some creative magic or a cross - universe event that brings lightsabers into the wizarding world. Maybe a powerful wizard discovers a way to create a weapon similar to a lightsaber using magic and some rare materials.
Pikachu would probably be very curious. It might zap the lightsaber a bit to see what would happen, and then be in awe of the bright blade. It could also get a bit protective of Ash when he wields the lightsaber, as if it senses the added danger.
Perhaps it's given to him by a mysterious figure. This figure could be from another dimension or a very old ninja who has been in hiding for a long time. They recognize Naruto's potential and power, and decide that he is the one worthy of wielding the black lightsaber. This could be part of a bigger plan to help Naruto defeat a new and powerful enemy that neither the ninja world nor the normal means of combat can handle.
The characters themselves are very interesting. Ezra is a young, growing character, and Sabine is a strong and talented one. Their different personalities create a lot of room for romantic and relationship - building storylines in fanfiction. Also, the world they are set in provides a great backdrop for love stories. The challenges they face together in the series can be translated into challenges that strengthen their relationship in fanfiction.