Let's set the record straight right from the start: the beloved character Natsuki Subaru, known for his relentless spirit and iconic tracksuit, is not from Oshi no Ko. While both series are incredibly popular in the anime and manga world, Subaru Natsuki is, and always has been, the main protagonist of Tappei Nagatsuki’s dark fantasy series, Re:Zero – Starting Life in Another World. It's an easy mix-up given the vast number of compelling characters across various anime, but understanding his true origins is the first step to truly appreciating his journey.
This super pillar hub is dedicated to exploring the real Natsuki Subaru, offering a comprehensive look at his character, powers, relationships, and the trials he endures in the world of Re:Zero. If you're wondering about his age or anything else, you'll find all the answers here, helping you separate fact from fiction and truly appreciate one of anime's most complex heroes. We invite you to and see why he resonates so deeply with fans.
Who is Natsuki Subaru, Really? Discovering Re:Zero's Hero
Natsuki Subaru is a modern-day Japanese teenager who finds himself suddenly transported to a fantasy world. At the time of his arrival and for much of the series, he is 18 years old. He's recognizable by his short black hair, brown eyes, and his often-worn tracksuit – a relic from his original world. Far from being a traditional overpowered hero, Subaru is defined by his ordinary nature, a trait that initially caused him great distress in his previous life. This background deeply influences his actions and motivations in the new, dangerous world he inhabits.
His initial personality is marked by brashness and an impulsive streak, often speaking his mind without considering social hierarchy or potential consequences. However, these surface traits belie a deep-seated desire to be special, to be a hero, and to protect those he cares about. To truly understand the man beneath the tracksuit, consider which lays out his basic information and the context of his early life.
The Burden of "Return by Death"
Subaru's defining ability, and arguably his greatest curse, is "Return by Death." This mysterious power, bestowed upon him by the Witch of Envy, Satella, allows him to rewind time to a previous "save point" upon dying. While this grants him an unparalleled advantage in overcoming seemingly impossible odds, it comes with horrifying psychological trauma and severe restrictions. Each death is real, each pain is felt, and he's forced to relive atrocities repeatedly, all while being unable to speak about his power to anyone. Attempting to reveal it triggers a terrifying physical manifestation from Satella, threatening not only him but also those he tries to confide in.
This ability transforms Subaru from an ordinary high schooler into a veteran of countless brutal deaths, each one hardening his resolve but also chipping away at his mental well-being. It's a heavy cross to bear, attracting demonic beasts with the "Witch's smell" it emits, further complicating his life. For an in-depth analysis, you should , a power that fundamentally shapes every aspect of his existence.
A Web of Bonds: Subaru's Key Relationships
Subaru’s journey isn't a solitary one. His desperate attempts to save others and his genuine kindness, even amidst his flaws, forge an intricate network of relationships that are central to the Re:Zero narrative. From devoted allies to bitter enemies, each interaction plays a crucial role in his development and the unfolding story. To truly appreciate the weight of his emotional landscape, we highly recommend you through our dedicated guide.
Emilia: The Devotion of a Knight
From the moment they first meet, Subaru is utterly captivated by Emilia, a half-elf noble who saves him. His devotion to her becomes the driving force behind many of his actions, leading him to accept the role of her knight and endure endless deaths for her safety. While Emilia initially struggles to reciprocate the intensity of his feelings, she gradually comes to trust and depend on him, recognizing the unwavering support he provides. Discover and how their bond evolves through countless trials.
Rem: The Unconditional Love
Rem, one of the twin maids of the Mathers mansion, starts as an antagonist but swiftly becomes one of Subaru's most ardent supporters. After he saves her life and helps her overcome her own insecurities, Rem develops deep romantic feelings for him, confessing her love and offering him a chance at a peaceful life away from the world's struggles. Though Subaru ultimately declines due to his unwavering commitment to Emilia, he cherishes Rem deeply, considering her second only to Emilia. Her subsequent coma becomes another powerful motivator for his determination. To understand this impactful connection, .
Allies and Adversaries: The Broader Circle
Beyond Emilia and Rem, Subaru's path intersects with numerous influential figures:
- Ram: Rem's twin sister, with whom Subaru develops a close, trusting friendship. She's often the first to see past his eccentricities.
- Beatrice: Initially aloof, the artificial spirit eventually forms a contract with Subaru, becoming his powerful magical support and a cherished companion.
- Roswaal L Mathers: The enigmatic lord of the Mathers domain, whose manipulative schemes often put Subaru in direct conflict with him, despite their initial camaraderie.
- Felt & Reinhard van Astrea: The street urchin and the legendary Sword Saint, both of whom become unlikely allies.
- Satella: The mysterious Witch of Envy, who holds an obsessive love for Subaru and granted him "Return by Death."
- Crusch Karsten & Julius Juukulius: Initially wary or antagonistic, these powerful figures eventually become some of Subaru's most respected comrades through shared battles and mutual respect.
- Echidna: The Witch of Greed, who shows a dangerous fascination with Subaru's abilities, attempting to manipulate him into a contract.
These relationships highlight Subaru's capacity to inspire loyalty, confront betrayal, and find common ground even with those who initially despise him.
More Than Just Return by Death: Subaru's Other Abilities
While "Return by Death" is his most prominent feature, Subaru is not entirely devoid of other capabilities, especially as he grows and adapts to the fantasy world. These acquired skills and powers showcase his resourcefulness and dedication to becoming stronger for those he protects. Explore to see how he supplements his unique blessing (and curse).
- Authorities: Through defeating Sin Archbishops, Subaru has absorbed fragments of their power, including the Authority of Sloth (manifesting as a weaker "Unseen Hand") and the Authority of Greed, which gives him "Cor Leonis," allowing him to bear the burden of strain from others.
- Magic and Spirit Arts: Initially a fledgling Yin Magic user, Subaru's gate was damaged. However, through his contract with Beatrice, he can utilize powerful Spirit Arts like E・M・M ("Emilia-tan is Seriously a Goddess") for absolute defense and E・M・T ("Emilia-tan is Seriously an Angel") for mana negation.
- Physical Training: He's received basic parkour training from Clind, and his repeated encounters with death have honed his battle sense and physical resilience, allowing him to utilize weapons like the Guiltywhip.
His journey is a testament to the idea that true strength isn't just innate power, but the willingness to adapt, learn, and endure for the sake of others.
The Irrelevance of a Misconception, The Relevance of a Hero
The question "how old is Subaru Natsuki in Oshi no Ko" may be irrelevant in its premise, but it opens the door to appreciating the rich, complex character of Natsuki Subaru from Re:Zero. His age of 18 is merely a starting point for a hero who undergoes more trials and tribulations than most could imagine in a lifetime. He is a character defined not by what magical powers he was born with, but by his sheer willpower, his capacity for love, and his terrifying ability to learn from death itself.
From his initial missteps as a fish out of water to becoming a strategic leader and knight, Subaru's evolution is one of the most compelling in modern fantasy. He is a flawed hero, relatable in his struggles, yet inspiring in his refusal to give up. To understand the full depth of his character and why he continues to captivate audiences worldwide, we encourage you to immerse yourself in . His story is a powerful exploration of trauma, resilience, and the enduring strength of the human spirit.