First of all keep it up don’t be sceptical we are all really enjoying something on here that’s actually well written , second I think u should allow mc go to be able to use his summons attributes 4 example nues lightning or elephants water or the adaption of maghdora, also I think he should be able to pick up the reversed cursed technique for healing
author, have you read the manga black clover? if yes, then I'm sure you know about a character named Nacht Faust. He had shadow magic and also had a contract with the devil, merging with demons, he acquired new properties of his shadow, such as a unique ability and armor personifying a demon. In jjk we have long been given to understand that shikigami can be fused with each other, and Sukuna has proven that he can use shikigami techniques without calling them, so perhaps you can introduce into your work the ability to merge with your shikigami to make the main character stronger and give him the opportunity to stand with the other strongest of the shinobi world. I also wanted to talk about the use of Nue’s electricity without calling her, you could use her like Kashimo from the same manga, where he himself came up with the idea of dividing electricity into positive (which accumulates in the target or weapon) and negatively charged electrons directed to the ground, for short circuit , thereby creating an attack that never misses
Great chapter! I don't mind waiting for the genin arc to start tbh. This story has been incredible so far so i will read whatever you write! Anyways, he already has Nue huh? That's a pretty incredible for someone not even a genin yet...At his growth rate, i would say he should be able to beat the likes of Gaara pretty easily when the chunnin exams arc begins ( This arc is also called the Fanfiction killer as A LOT of authors quit when they reach it...i am REALLY hoping it won't happen here too. This story is by far the best cross of Naruto and Jujutsu).
if you want to make this technique stronger for the narutoverse as you mentioned in the start of the fanfic here are my simple ideas Abilities: Customized Shikigami: The user can choose from a wide variety of shikigami, each with unique abilities and attributes. They can mix and match shikigami to create specialized combinations for different situations. Fusion Techniques: The Eclipsed Shikigami Convergence allows for fusion techniques where two or more shikigami can merge their abilities to create devastating attacks or defenses. For example, combining a fire-based shikigami with a water-based one to create scalding steam attacks. Shikigami Synchronization: The user can synchronize with their shikigami, gaining enhanced physical and sensory abilities when merged with them. This includes increased speed, strength, and perception. Eclipse Mode: As the user masters this technique, they can access an advanced state known as "Eclipse Mode." In this state, they can temporarily summon an immensely powerful Eclipse Shikigami, an entity that combines the powers of all the shikigami they have at their disposal. The Eclipse Shikigami can unleash devastating attacks that rival the strength of special grade curses. If you want you can also improve the power of each shinigami give them new abilities of give them a new form