Kengo Benimaru's backstory is one of those gems that really adds depth to his character in the light novels. While he might come off as just another powerful fighter in the anime adaptation, the novels dive much deeper into his past, revealing how he became the loyal and formidable warrior we know. Growing up in a village constantly under threat, Benimaru had to develop his skills early, and his encounters with Rimuru before the founding of Tempest shaped his worldview. The novels explore his internal struggles, like balancing his fierce pride with his growing loyalty to Rimuru, which isn’t as fleshed out in the anime. There’s even a touching moment where he reflects on his childhood mentor, someone who instilled in him the values he carries now. It’s these little details that make his journey from a hotheaded fighter to a trusted leader so satisfying.
What’s really cool is how his backstory ties into the broader world-building. The light novels don’t just drop his past as a standalone flashback; they weave it into the politics and conflicts of the Jura Tempest Federation. His relationship with other ogres, like Shuna and Hakurou, gets more context, and you see how his past influences his decisions in the present. For instance, his initial reluctance to fully trust Rimuru stems from old wounds, not just generic skepticism. If you’re a fan of Benimaru, the novels are a must-read—they turn him from a strong side character into someone with real emotional weight. Plus, his dry humor in the novels is way funnier when you understand where he’s coming from.
Oh, Benimaru’s backstory is chef’s kiss in the light novels! The anime barely scratches the surface, but the novels give him this rich history that explains why he’s so fiercely protective of Tempest. He wasn’t always the calm, collected leader—he used to be way more impulsive, and his growth feels earned. There’s a whole arc about his rivalry-turned-friendship with another ogre that’s just chef’s kiss for character development. If you love him in the anime, you’ll adore him even more after reading the novels.
2026-04-19 10:32:37
9
View All Answers
Scan code to download App
Related Books
Dropped Into a NSFW Novel and Immediately Became His Obsession
Zina Faye
10
5.5K
I woke up inside a novel, and not even as an important character.
I became a pretty background extra in a smut novel.
My brother, however, was the only normal person in the entire story.
His character setting was the one man the soft, delicate heroine could never win over.
He was the cold, unattainable Prince Charming she could never conquer.
When the heroine cried and confessed her love, he was studying.
When she offered him her whole heart and body, he was busy starting a company.
When she spiraled into scandals and nightlife, he was already a billionaire, calm and untouchable.
I thought he would live a quiet, ascetic life forever.
Until one night, I walked in on him at midnight…
holding a piece of clothing I recognized all too well, murmuring a name over and over, a name so familiar that my scalp tingled.
The next day I woke up, I am now the fiance of the Duke of Dubois Castle, or known as Lemon.
“I am a demon who lives by desire and greed, you have yielded with the contract that you have exchanged with your life?”
“Then what do you want?”
“I want the whole of you Veta Le Blanchet, not just your blood, heart and soul, it is the whole of you.”
Theroux Claude, the third prince of the kingdom.
“Lady Le Blanchet, just how can you stand still this demon duke? If you ever get tired of him, you are always welcome to my palace.”
Another troublesome man, my childhood friend when I was at the academy, Durand Gagnon.
“I have attained this nickname not just because I follow all his Majesty’s order, but because I want to have a stronghold in the knight position so that I can support you my Lady, remember that my oath is only for you.”
Then, what is my cousin thinking that he would say such things?
“Sister, I have finally inherited the title of the Baron, please come back to our fief, and I will make sure to bring back the glory of our family!”
As I try to relinquish the past, the more troublesome it becomes. Is clinging to the tiny bit of my life a wrong choice? And why is the temple spying on me?
“Lady Le Blanchet is the only descendant of the family, you shouldn’t involve yourself farther with the Demon Duke.”
“It’s done my Lady, as long as it is you, I can give everything, even if I destroy this Kingdom.”
Hold on, just what on earth this demon wants from me?
In my previous life, my girlfriend's childhood friend impersonated a rich heir and messed around with the fake power he had. I exposed him, and he crashed his car into me.
In my final moments, my girlfriend's sister begged on her knees, pleading for my girlfriend's aid, hoping she could save me, but my girlfriend did nothing.
"He wouldn't do that. Zacharias is beyond this. He would never dirty his hands for a nobody like this guy. He might be my boyfriend, but that doesn't mean he can do anything he wants. He'd better know his place."
My girlfriend's sister remained on the ground for three days. In the end, Zacharias dragged her away, violated her, and killed her.
Even at my dying breath, my girlfriend was still covering up for her childhood friend. She refused to believe Zacharias hit someone with a car and violated her sister.
And then I was reborn. This time, I did not beg and plead for my girlfriend to give me a moment of her time. I called my brother instead.
"Hey? Yeah, it's me. Some bastard impersonated me and is dragging my name through the mud. I need you to take that guy out. Also, I'm not marrying Annabelle Lawson. I'm taking her sister instead."
I gave the Lawsons a lot of resources so they could grow, and what did I get in the end? An ungrateful woman who would leave me stranded and dying all for another man.
With all their resources pulled, Annabelle and her childhood friend would be saying goodbye to their good old days and hello to their personal hell.
After the car accident, one of the Laurent heiresses has died, while the other lives.
The moment my religious wife, Amelia Laurent, opens her eyes in the hospital, she addresses me as her brother-in-law. Then, she claims that her older sister, Penelope Laurent's soul has possessed her body.
I quickly get all the doctors and priests I can find, hoping to swap Penelope's soul out for Amelia's. That is, until I overhear Amelia's conversation with our daughter, Charlotte Robinson, at night.
"Mom, you've had a crush on Uncle Samuel for so many years, and you've even gone into abstinence by staying in the monastery for years. Now, you can finally be with him in the open."
Amelia pats Charlotte on the head. "If it wasn't for the need to prevent your father from ruining Samuel's relationship back then, I wouldn't have married your father in the first place."
As I struggle to register the truth from the shadows, I witness what happens next after Charlotte leaves the ward.
Amelia, who has always prided herself on her composure and restraint; who has practiced abstinence for seven long years for the sake of her religion, proceeds to be physically intimate with Samuel Bennett—a fresh widower—on the cramped hospital bed.
The next day, I apply for Amelia's death certificate immediately before burning our marriage certificate.
On the day Amelia throws a grand proposal banquet for Samuel, I board the helicopter that has flown over to pick me up.
But strangely enough, Amelia tears through the streets while chasing after the helicopter.
I am dead.
Only before my death do I realize that I am the sidekick in a tragic coming-of-age story, while my best friend Tinsley Wood is the female lead.
I am destined to be disgraced and meet a miserable end, all to highlight her innocence, kindness, and endless good luck.
When I open my eyes again, I am reborn on the very first day Tinsley asks me to take the blame for her.
On the Lunaris Festival, the palace banquet glittered with candlelight. It lasted until the Crown Prince rose and dismissed every consort of his for the sake of his first love, the woman he had never stopped idolizing.
Everyone else accepted the gold coins from the prince and returned home for reunions. I had nowhere to go. I found a rope and hanged myself at the gate of the Withered Court.
I had been reborn into this world and spent 21 years locked in the System's mission. It demanded that I court four designated male leads and earn absolute affection from at least one of them. I failed every route. The final path collapsed in my hands.
The System offered one last mercy. If this body died, I could return home and reunite with my family.
As my consciousness slipped away, I thought I heard someone scream my name, as if the world itself were breaking.
Kengo Benimaru's evolution in the anime is one of those arcs that sneaks up on you—quiet at first, then explosive. Initially, he comes off as this laid-back, almost lazy guy with a knack for fire manipulation, but there's simmering intensity beneath the surface. His growth isn't just about raw power; it's about embracing responsibility. Early on, he's content being the ace of the Asakusa squad, but as threats escalate, he steps into a leadership role, balancing his playful demeanor with a fierce protectiveness over his people. The show does a great job showing his tactical mind, too—like when he adapts his flames to counter opponents who underestimate him. By the later arcs, he's not just strong; he's wise, using his experience to mentor others while still cracking jokes mid-battle.
What really sticks with me is how his relationship with Shinra and the others deepens. He starts as a rival-ish figure, but their mutual respect grows into something like family. The anime peppers in moments where his usual cool slips—like when he gets genuinely pissed at injustices—and those cracks make him feel human. His final power-ups aren't just flashy; they feel earned, rooted in his journey from a talented hothead to a pillar of the Fire Force world. That scene where he faces down his ultimate foe, grinning like always but with this unshakable resolve? Chills.
Kengo Benimaru from 'How a Realist Hero Rebuilt the Kingdom' is this absolute powerhouse with a mix of combat skills and tactical genius that makes him stand out. His swordsmanship is top-tier, honed through years of training and battlefield experience. He’s not just swinging a blade mindlessly—every move is calculated, almost like he’s playing chess while everyone else is stuck in checkers. Then there’s his fire magic, which is no joke. He can summon and control flames with precision, whether it’s for offense or defense. The way he integrates magic into his swordplay is seamless, creating this deadly combo that’s hard to counter.
What really sets him apart, though, is his leadership. He’s not just a lone wolf; he’s a strategist who understands how to command troops and adapt on the fly. His ability to read the battlefield and make split-second decisions is what makes him a nightmare for enemies. Plus, his loyalty to Souma and the kingdom adds this layer of depth to his character—he’s not just fighting for himself but for something bigger. It’s rare to see a character who balances raw power with such sharp intellect, and that’s why he’s one of my favorites in the series.
Kengo Benimaru is one of those characters who just steals every scene he's in in 'That Time I Got Reincarnated as a Slime'. He starts off as this fierce ogre leader, all pride and fire (literally, since he’s got flame powers), but after Rimuru Tempest wipes the floor with him and his siblings, he becomes this loyal, almost brotherly figure in Rimuru’s growing empire. What I love about Benimaru is how his character arc isn’t just about strength—it’s about leadership. He’s the kind of guy who’s terrifying in battle but also has this deep sense of responsibility for his people. Like, he doesn’t just fight for fun; he fights to protect the village and the kids who look up to him.
And his dynamic with Rimuru is so fun to watch. At first, he’s all 'I’ll never serve anyone,' but then he’s basically Rimuru’s right-hand man, coordinating battles and even helping govern. The way he balances his ogre heritage with his new role as a general is super compelling. Plus, his design is just chef’s kiss—those red markings, the samurai vibe, and that cocky grin. Every time he shows up, you know things are about to get awesome. Honestly, if Tempest had a 'Most Reliable Badass' award, Benimaru would win it every year.