I've read a ton of 'Solo Leveling' fanfics, and Beru's loyalty to Sung Jin-Woo is one of the most fascinating dynamics. Many stories dive deep into Beru's initial fear and awe of Jin-Woo, transforming into unwavering devotion. Some fics explore how Beru's insectoid nature clashes with his growing emotional attachment, creating a unique tension. The best ones show Beru's silent protectiveness, like when he hovers near Jin-Woo during battles or subtly adjusts his posture to shield him. Others take a darker turn, imagining scenarios where Beru's loyalty is tested—like Jin-Woo being injured or betrayed—and Beru's rage becomes almost poetic. The emotional bond is often portrayed as wordless but profound, with Beru understanding Jin-Woo's commands before they're spoken. It's a masterclass in non-verbal storytelling.
Some authors go further, giving Beru internal monologues that humanize him without losing his alien edge. They explore his confusion at emotions like gratitude or pride, which his species shouldn't feel. A standout trope is 'found family,' where Beru becomes Jin-Woo's shadow in both duty and heart. The loyalty isn't blind obedience; it's earned through mutual respect. Jin-Woo trusts Beru with his life, and Beru repays that trust with a ferocity that’s touching. The best fics make you forget Beru isn’t human, because his devotion feels so real.