Shonen protagonists in anime and manga embark on a traditional hero’s journey, typically beginning as less capable beings who confront numerous challenges to eventually emerge as legendary warriors. The introduction of the Solo Leveling System by the enigmatic Architect signifies a groundbreaking shift in character development methodologies within these narratives.
This innovative system deviates from the conventional training montages and power upgrades, favoring a structured progression model akin to video game mechanics. By transforming raw abilities into quantifiable advancements, it empowers protagonists to ascend to extraordinary heights in strength and intellect.
Disclaimer: The content presented here is speculative and reflects the author’s opinions.
Shonen Protagonists Who Could Benefit from the Solo Leveling System
1) Naruto Uzumaki (Naruto)

Even with Naruto’s immense chakra reserves and god-like status, the Solo Leveling System could significantly enhance his capabilities. While his ninja skills are formidable, structured development is essential for advancing his jutsu techniques and strategic planning.
The gamification of his training would enable him to master chakra more effectively and learn advanced techniques faster, allowing him to allocate experience points efficiently among his various skills, including ninjutsu, genjutsu, and taijutsu.
2) Izuku Midoriya (My Hero Academia)

As a hero who relies on the borrowed power of All Might’s One For All, Midoriya is an ideal candidate for the Solo Leveling System. His struggle for complete control over his quirk could be alleviated with a system that provides detailed metrics on his power usage and physical limits.
This structured approach would enable him to enhance different aspects of One For All, such as strength, speed, and combat techniques, while refining his tactical skills.
3) Ichigo Kurosaki (Bleach)

For Ichigo, the Solo Leveling System could provide a much-needed framework for his sporadic power development. His transformations are often instigated by intense emotions or external forces, which do not allow for controlled growth.
The system could facilitate a thorough analysis of his complex abilities, integrating elements from his Shinigami, Hollow, Quincy, and human heritage into a cohesive training plan.
4) Gon Freecss (Hunter x Hunter)

Gon’s potential could see significant improvement through the Solo Leveling System, which would bring clarity to his Nen abilities currently influenced by emotion. This structured approach would avoid dangerous transformations, like his adult form triggered by rage.
Experience tracking could help him develop Nen techniques strategically, allocate skills across his Enhancer abilities, and create tactical combat strategies, ensuring sustainable growth.
5) Edward Elric (Fullmetal Alchemist)

For Edward, the Solo Leveling System could transform him from an intuitive alchemist into a strategic expert, allowing him to systematically track improvements in his alchemical skills.
Real-time feedback would enhance his understanding of energy efficiency during transmutations and enable him to branch out into specialized skill areas related to automail integration and combat alchemy.
6) Monkey D. Luffy (One Piece)

The Solo Leveling System could facilitate Luffy’s growth by providing insights into optimizing his Haki and Devil Fruit powers. By tracking experience across different Gear transformations, he could enhance his combat techniques methodically.
This structured feedback would allow him to transition from a natural fighter into a calculated warrior, refining both his physical and spiritual growth.
7) Tanjiro Kamado (Demon Slayer)

Through the Solo Leveling System, Tanjiro could gain insights into his breathing techniques, allowing him to monitor the efficiency of his each breath style as well as his elemental mastery.
By allocating experience points across different combat and breathing forms and enhancing his spiritual understanding, he could evolve from a compassionate fighter into a highly skilled demon slayer.
8) Shinra Kusakabe (Fire Force)

Shinra’s pyrokinetic abilities would greatly benefit from the systematic approach of the Solo Leveling System, allowing for streamlined tracking of his “Devil’s Footprint”technique.
This would enable him to quantify aspects such as movement speed and flame intensity while creating specialized skill trees for his offensive and defensive capabilities.
9) Goku (Dragon Ball)

As an unparalleled Shonen protagonist, Goku would harness the Solo Leveling System to refine his power development. This method could give him clarity regarding energy requirements for various Super Saiyan transformations.
By accurately measuring his Ultra Instinct progression, Goku could optimize his ki manipulation and combat techniques, uncovering uncharted potential in his legendary abilities.
10) Asta (Black Clover)

Born without magical abilities, Asta is particularly suited for the benefits of the Solo Leveling System. The method could facilitate measurable advancements in his anti-magic skills and physical strength.
Real-time feedback on skills would help him balance his combat techniques and physical enhancements, transforming dynamic potential into an effective fighting strategy.
Conclusion
The Solo Leveling System transcends traditional power progression, introducing a transformative method for character development. Shonen heroes evolve beyond their limits as they shift from raw growth to measurable progress.
Such a system democratizes power enhancement, presenting tailored paths that harness individual strengths while addressing weaknesses. Envision a landscape where heroes not only train but also systematically evolve, where every challenge fosters quantifiable growth and each battle is an opportunity for strategic skill enhancement.