Yes. Shikamaru buried Hidan. He can die from malnutrition… by the time of Boruto he is dead dead dead.
Given the conditions in which he was defeated by Nara Shikamaru, Hidan is still alive. He is buried in the forest area accessible only to the members of the Nara clan. He was defeated by Shikamaru as a revenge to the death of Shikamaru's sensei, Sarutobi Asuma.
Fairy Tail's Timeskip might be one of the worst ever done in Manga. Basically, instead of using the passage of time to fast forward the cast's strength or character progression, Fairy Tail does the opposite. The guild gets frozen in time and the rest of the world passes them by for 7 years.
In the actual year of the series (X793) Wendy has 14 years old, Sting and Rogue 21 years old, and Natsu and Gajeel´s age is actually unknown (probably between their 18 or 20 years old).
Death Fire. Natsu was kicked out of FairyTail for a crime he didn't commit. He meets a man and that man tricks him. Team natsu are trying to find natsu, they take a job and they do find him... but he's not the natsu they thought they knew.