I've read a fanfic called 'RWBY's Summer with a Ninja'. In this one, the RWBY characters meet Naruto during a summer mission. It's a short but sweet fanfic. It focuses on how the RWBY team learns from Naruto's determination and his unique jutsu. The description of the summer landscape in the RWBY world along with Naruto's presence makes it an enjoyable read.
DeviantArt sometimes has fanfiction in the form of written stories or even illustrated ones related to Naruto and RWBY in a summer setting. Another option is to check out some Naruto and RWBY - dedicated fan forums. There, fans often share their own fanfiction creations, and you might stumble upon some great summer - themed ones. Just join the community and start exploring the fan - made content.
A common theme is the clash and fusion of different powers. Naruto has his chakra - based ninjutsu and Summer has her own combat style. Fanfictions often explore how these powers can be combined or used in new and interesting ways.
Perhaps in a fanfiction, Summer discovers a hidden portal that leads to the Naruto world. There, she meets Naruto and realizes that his experiences with loss and his determination to protect his friends are similar to hers. They form a bond and work together to help a group of ninjas who have been affected by a strange phenomenon that is causing their powers to go out of control. This phenomenon might be related to the Grimm from the RWBY world.
Yes, in some RWBY fanfictions, Ruby can be depicted as the Summer Maiden. Fanfiction allows for creative interpretations and alternate storylines, so it's not uncommon to see such a concept explored.
Obviously, Summer and Naruto would be the main focuses. Summer, with her skills and backstory from RWBY, would bring her own set of abilities and relationships to the story. Naruto, on the other hand, is full of energy and has his powerful ninja techniques. Their interactions would be central to the fanfiction.
One popular 'naruto x summer rwby fanfiction' might be those that focus on how Naruto's unique ninja abilities interact with Summer Rose's combat skills from RWBY. For example, there could be a story where Naruto is transported to the RWBY universe and teams up with Summer. They might face off against some powerful Grimm together, with Naruto using his Rasengan and Summer using her scythe skills in unison.
The plot could center around Summer's return and how it affects the current state of affairs in the RWBY world. Maybe she comes back with new powers or knowledge that she imparts to the other characters. It might also deal with the emotional impact of her return on her family and friends, especially Ruby who has grown up without her mother for a long time. There could be battles and challenges that Summer has to face as she reintegrates into this world, and she might be a key factor in solving some greater threat that the RWBY characters are facing.
Most fans would be shocked. Since Taiyang is seen as a family - man in the RWBY world, this would be a huge deviation from his character. Some might be intrigued as it adds a new layer of drama, but many would also be disappointed as it goes against the positive image of the character.
I don't think it's that common. Taiyang is usually depicted as a loyal person in RWBY lore. Fanfiction can be a wild place though. But most RWBY fans like to keep the characters' core values intact. So while there may be some out - there fanfictions with this idea, it's not something you'll see everywhere. It might also be a way for some writers to explore the darker side of the RWBY world, but it's not in line with the overall positive image of Taiyang.