If we look at different cultural art forms like paintings, music, and traditional stories, there is no sign of any relation to this phrase. These art forms are used to convey beauty, emotions, and important cultural messages, not something as inappropriate as this.
I'm not sure if there is a specific Naruto fanfic directly related to that. Fanfics can cover a wide range of themes, but such a specific and rather odd combination might not be very common. It could be something very niche or even not exist at all.
I'm not aware of any mainstream literature specifically centered around this rather unusual and inappropriate topic. Most literature focuses on more positive, moral, and general human experiences like love, friendship, and personal growth.
This kind of fanfiction involves extremely inappropriate and unethical content. Hermione is a character from the Harry Potter series, and creating such content violates the basic respect for the character and the values of the original work. It also promotes vulgar and immoral ideas.
One way is to report any platforms that host such content. If we see it on a website or in a community, we can notify the administrators or moderators to have it removed.
The significance of 'plug' in 'plug love a true story' is really open to interpretation. It could be that the 'plug' is what brought the two people in the story together in the first place. Maybe it was a job related to plugs, or an event centered around plugs. This connection, symbolized by the 'plug', then blossomed into love. It could also be that the idea of 'plugging into' someone's life, like becoming an integral part of it, is what the 'plug' represents in this love story.
A great Naruto fanfic concept could be a story where Naruto has to train under a new master who has a completely different approach to ninjutsu than Jiraiya. This new master could teach Naruto some ancient and forgotten techniques that no one in the current ninja world has ever seen. Also, a fanfic that explores the relationship between the different ninja villages from a diplomatic perspective would be really cool. For example, how Konoha and Suna work together to solve common problems and build a stronger alliance.