Maybe in the fanfiction, a new character is introduced who is a dragon lacrima user from a far - off land. This character comes to the Naruto villages seeking help because his land has been destroyed by dark forces who are also after the dragon lacrima. Naruto and his friends then have to team up with this new character to fight off the dark forces and protect the remaining dragon lacrima.
A possible plotline is that there is a hidden village in the Naruto world that is built around the worship and use of dragon lacrima. The main characters, like Sasuke and Naruto, are invited to this village for a tournament. During the tournament, they discover a conspiracy involving the misuse of dragon lacrima that could endanger the entire Naruto world.
One plotline could be Naruto being the only one who can tame the Juubi. So, he has to go on a journey to master the Juubi's power and use it for good. Another could be that the Juubi is somehow split into different parts, and Naruto has to find all the parts to prevent an evil force from using it to destroy the world.
In 'naruto dragon lacrima fanfiction', it may be about how the dragon lacrima affects the existing power structure in the Naruto world. Say, if a certain character gets hold of a powerful dragon lacrima, it could disrupt the balance between the villages. It could also be a story of friendship or rivalry that is centered around the possession or use of these dragon lacrima.
One plotline could be that Naruto discovers he has Blue Lantern powers. He then has to learn how to control them while still maintaining his ninja skills. Another could be that the Naruto world is facing a new threat that can only be defeated by the power of hope, so Naruto as a Blue Lantern steps up to the challenge.
One plotline could be that Harry discovers a hidden diary of Kitiara's and it reveals secrets that set him on a quest to protect her legacy.
One plotline could be that Richonne discovers their baby is allergic to a certain type of baby formula. So they start a journey to find a suitable alternative, meeting various characters along the way who either help or hinder them in their search.
One plotline could be that a young wolf in the pack discovers a lemon tree and the lemons have the power to give the wolves the ability to communicate with other animals. So, the pack has to protect this lemon tree from other predators who want to use the lemons for their own gain.
I'm sorry, I'm not aware of specific 'acnologia is naruto fanfiction' examples off - hand. You could try searching on fanfiction websites like FanFiction.net or Archive of Our Own using relevant keywords to find such stories.
Some examples could be stories that focus on Naruto having a different jutsu system based on the prototype. For instance, if in the prototype he had a more nature - based jutsu instead of the shadow clone jutsu. Another example might be fanfictions that explore the relationships between characters like Sasuke and Naruto in a way that was different in the prototype, maybe they were friends from the start in the prototype and the fanfiction elaborates on that concept.
It could be that Naruto is addicted to the idea of proving himself to the village. This leads him to take on extremely dangerous missions one after another. His addiction to this self - validation puts his life at risk, and his friends and mentors have to convince him that his worth is not just measured by these dangerous feats.
I'm not sure of specific examples off - hand. However, it could be a fanfiction where Naruto loses a major battle against a powerful enemy, like Orochimaru, in a more brutal and final way than in the original series. This would be a form of 'crushed' as his hopes and plans are completely thwarted.