Definitely Naruto. Naruto would be curious about Kirby's abilities and would probably want to be friends right away. They could have some fun training sessions together, with Kirby showing off his inhaling skills and Naruto his new Rasengan variations. Also, Sakura might interact with Kirby. She could be initially a bit skeptical but would come around when she sees how Kirby can be helpful in medical situations by using his powers to quickly gather medicinal herbs or supplies.
Sure is! Toy Story is a hallmark Pixar film. It pioneered the use of computer animation in feature-length movies and set the stage for many other Pixar classics.
Not sure. I haven't come across 'Joy Story' being identified as a Pixar short. Maybe it's a relatively new or less popular one that I'm not familiar with.
In such fanfiction, Kirby is often depicted as his cute, round self, but with a more tender side when it comes to his feelings for Jigglypuff. He might use his unique abilities to protect or impress Jigglypuff.
Ruby could be a great friend for Kirby. They both have a sort of innocence about them. Ruby's love for adventure and her kind heart would make her open to befriending Kirby. They could go on adventures together and Ruby could help Kirby understand the world of Remnant.
It has likely influenced the franchise in terms of art direction. The Japanese graphic novel's art style may inspire future Kirby games or other media in terms of character design and scenery. For example, if the graphic novel has a particularly cool way of depicting Dream Land, it could be incorporated into a game.