Well, in fanfiction Naruto could be always calm because he has a strong sense of purpose. He knows what he wants to achieve, like protecting his friends and the village. This focus keeps him level - headed. For example, when facing powerful enemies, instead of panicking, he just thinks about how to overcome them to reach his goals. And also, he might have learned some mental techniques from the toads in Mount Myoboku that help him stay calm.
In some fanfictions, Naruto is always calm because he has mastered his inner chakra better. His training with Jiraiya made him more in control of his emotions. So when facing challenges, he can draw on that inner peace and not be easily rattled.
Maybe Naruto uses his positive energy. Naruto is known for his optimistic and persevering nature. He could flood Kurama with his positive emotions, like hope, friendship, and love. These strong positive feelings might be so overwhelming for Kurama that they gradually soothe his angry and wild nature, thus calming him down.
She could use her Uzumaki chakra chains to break through any barriers or enemies in their way. Maybe she also has some secret teleportation jutsu that she uses to quickly get away with Naruto.
Well, Aang being the Avatar has a deep connection with the elements. In this fanfiction, perhaps he enters the Avatar State and uses all his elemental powers in harmony. He could use waterbending to create moisture and cool the volcano, combined with his airbending to disperse the heat and gases.
In many fanfictions, Hinata calms Naruto with her gentle presence. Just by being there beside him, her quiet and kind nature has a soothing effect on Naruto, who is often so full of energy and impulsiveness. For example, she might hold his hand or give him a soft, understanding look that makes him feel at ease.
Naruto could use his shadow clones to create a diversion. He might make a bunch of clones and have them attack the Akatsuki members in different directions while he tries to find a way out. For example, he could use the chaos to search for a hidden passage or a weak spot in their hideout.
In some fanfiction, Naruto could use his shadow clone jutsu to create a distraction. While the clones are causing chaos, he slips into the room with the Forbidden Scroll and begins the copying process. He might also have some help from an unexpected ally who knows the security system around the scroll and helps him get access.
Well, he might use his powerful jutsu like the Rasengan. He could also summon his toads to help him out in the battle against the army. Maybe he uses his shadow clone technique to confuse the enemy and then strike them when they're vulnerable.
Well, in some versions of fanfiction, Naruto might have unlocked a new and super - powerful form of his Sage Mode. This enhanced form could give him the strength and speed necessary to outmaneuver and overpower Madara. Maybe he also gets some unexpected help from allies, like a new jutsu from Kakashi that weakens Madara's defenses just long enough for Naruto to land the final blow.
In some fanfictions, Naruto might use his strong influence and the power of his bonds. He could convince the other villages to help, pooling resources like building materials and ninja manpower. With his own Uzumaki heritage and knowledge of Uzushiogakure's past, he'd guide the reconstruction process.
In certain fanfic concepts, Naruto could have found a special relic or artifact. This relic might have the power to reverse death. Since Naruto is always on adventures and exploring different places, he might stumble upon such an item and use it to revive Kushina. It could also be related to the Uzumaki clan's secrets that he uncovers which enables him to bring his mother back.