No, it's not common. Naruto is known for his determination and his pursuit of being a great ninja. Smoking is something that doesn't really fit into his character profile. But in fanfiction, writers sometimes like to take a character out of their comfort zone or established image, so there might be a few out there with this plot, but not many.
However, Naruto is also a very loyal and understanding person deep down. So after the initial shock and anger, he would probably start to investigate the situation more. He might talk to their friends like Shikamaru or Sakura to see if they know anything. He would want to get to the bottom of it rather than just making a hasty judgment.
Lilith could be a self - created character in the Naruto fanfiction universe. Maybe she's a powerful witch or a dark sorceress who has her own motives and goals.
In this fanfiction, perhaps Lilith is an ancient and powerful being. She catches Naruto because she views him as a threat to her plans. Naruto, being the tenacious hero he is, tries to find a way to escape while also learning more about Lilith's motives. It could involve a lot of action scenes as Naruto uses his ninja skills against Lilith's otherworldly powers.
I'm not entirely sure as I haven't read that specific fanfiction. But it could potentially be a story where Naruto somehow gets caught in a situation created by a character named Lilith. It might involve an adventure, some sort of conflict, or even a strange new power dynamic.
Perhaps the writer wants to create a more 'adult' or 'mature' version of Naruto. By having him smoke, it gives an impression of a character who has seen a lot and is dealing with his problems in a less - than - ideal way. It could also be a way to shock the readers and make them see Naruto in a completely new light.
Well, if Naruto was caught singing fanfiction, it could lead to some really interesting situations. His friends might be super surprised and start teasing him about it. They could also be impressed if he's actually good at singing. Maybe it would even become a new inside joke among the group.
If Naruto was caught singing fanfiction in the village, there would be a whole range of reactions. The merchants in the village might see it as a new opportunity to create merchandise related to this new 'Naruto - singing - fanfiction' thing. The ninja families might be more concerned about whether this is a sign of Naruto getting distracted from his duties. The children would likely be the most excited, running around and telling everyone about it. The village elders, on the other hand, would probably have a long discussion about whether this is an appropriate behavior for someone of Naruto's standing. But in the end, Naruto's charm and popularity would probably smooth over any major negative reactions.
One possible plot in this 'naruto caught hinata dead fanfiction' is that Hinata was assassinated by a secret enemy. Naruto, when he catches her dead, is heartbroken. His world shatters as Hinata was not only a love interest but also a dear friend. He would probably go on a rampage at first, full of anger and pain. But then, he would start to think more rationally and use his ninja skills to uncover the conspiracy behind her death. He may also have to deal with the reactions of other characters, like her family and their friends, all while struggling with his own emotions.