His mentor, Kakashi, would also be there to help. Kakashi is very protective of Naruto. He would use his experience and calm demeanor to make sure Naruto gets the best possible care and support during this crisis.
Another plotline could be that a character with a pre - existing heart condition, like an older ninja, has a heart attack during a village emergency. This forces the younger generation, like Naruto and his friends, to take on more responsibilities and grow up faster as they deal with the situation and try to help the ailing ninja.
In this fanfiction, Tony Stark having a heart attack might force him to reevaluate his life. He might start thinking about all the times he's put himself in danger without much regard for his own well - being. It could also be a turning point for his relationships, like with Pepper Potts. She would be extremely worried and might take more control over his lifestyle to prevent further health issues.
Well, it could be really tragic. Maybe his friends would be in shock and try desperately to save him. Hermione would probably use all her knowledge of magic to find a cure, while Ron would be by his side, feeling helpless yet determined to support his best friend.
Naruto is often involved as he is the main character of the series. His actions and adventures are central to most fanfictions, so if there's a heart attack situation, it's likely to somehow be related to him. For instance, he might be the one experiencing the heart attack or trying to save someone who has one.
There were many novels in which the male protagonist had a heart attack.
In To Our Lost Youth, the male lead Zheng Wei had a heart attack, but he overcame it through his strong will and hard work and got together with the female lead Chen Xiaozheng.
The male lead in " Silent Xiao ", He Yichen, suffered from heart disease, but he still persisted in pursuing the female lead, Zhao Mosheng, and finally won her trust and love.
3. The male lead, the 14th Prince, had a heart attack, but he still insisted on fighting in the palace and got together with the female lead, Ruoxi.
The male lead Mo Yu in " Flowers Are Not Flowers, Fog Are Not Fog " had a heart attack, but the emotional entanglement between him and the female lead Lu Li was very touching.
The male lead Xie Jing Xing in "The World's End Guest" had a heart disease but he used his heart disease to pursue the female lead Mei Xiang and finally obtained her heart.
The above were just some examples. Of course, there were many other novels where the male protagonist had heart disease. The readers could choose according to their preferences.
I don't think it's a common type. Most Naruto fanfictions tend to build on his existing character traits like his loyalty, his drive to protect his friends and village. A 'naruto has no heart' concept goes against the core of his character that fans usually love, so it's probably not a common genre in the Naruto fanfiction community.
In this fanfiction, Naruto's panic attack might be caused by the pressure he feels. He has so many responsibilities, like protecting the village and his friends. Yamato might be a trigger because Naruto doesn't want to show weakness in front of him, but the stress gets to be too much.
One possible trigger could be the memory of losing Sasuke. Sasuke's departure has always been a huge emotional blow to Naruto. Every time he recalls the moment when Sasuke left the village, it might stir up intense feelings of helplessness and fear of losing his friend forever, leading to a panic attack.
Probably Rhodey. He's been Tony's friend for a long time. They've been through a lot together, and Rhodey would be very worried about Tony's well - being.