I Am the Hero's Immature Younger Brother

Hello?I’m the hero’s immature (written as immature, read as ill-mannered) younger brother.Yes! Just like that introduction, I’m a crooked, unrealistic, selfish, ill-mannered immature younger brother!You ask why the younger brother’s character is like that when his hyung is a hero!?“Hyung… where are you going at this dawn?”“The princess of the castle has been kidnapped. Hyung will be back soon.”“Can’t you not go? I don’t want to be alone……”“Ren. Everyone is waiting for hyung.”“Me too… I’m waiting for hyung too! I’ve always been waiting!!”“Ren, be good. I’ll be back.”Even on my birthday!Even when I got hurt!Even when I was groaning in bed from fever!He’d go off to defeat dragons, or break through dungeons!! Why does the princess who was living well in the castle get kidnapped by the Demon King?! Can this damn world not function without my hyung?!!So you see, I had no choice but to become twisted.Hero welfare is good now, but… 10 years ago when they didn’t give jack shit… Hyung even took away my snacks to share with the neighborhood kids!! He’s praised as a hero, but what does that have to do with me?!“What??”“Oh my, is that person the ‘Ren’ he was talking about?!”“Ren? That!!”“Right! That troublemaker of the village, the hero’s younger brother! They said he was immature and it’s true. He gets into fights every other day, right? It hasn’t even been a day since he came to visit and I’ve already seen three fights!”“Tsk tsk. What’s he going to become when he grows up……”“What?!”I stopped glaring at the big guy who’d bumped shoulders with me and started a fight, and glared instead at the villagers gossiping about me. You bastard who stole my coin, I’ll see you later!“That ill-mannered…!”“Now, now!! Stop it. It’s not like it’s been just a day or two that we’ve benefited from the hero!”“The younger brother hasn’t actually done anything wrong!”Kwung! Kung!I stomped my feet on the spot with all my strength. Dust rose and those who were startled by my sudden action stopped talking.I equipped my face with the irritating smile I’d practiced in the mirror and opened my mouth wide enough to show all my teeth as I laughed.“That’s right. f*ck. I haven’t contributed anything, have I? But what about you folks? Is there anything you’ve done for me? f*ck! Why are you carelessly gossiping about others and acting crazy!! Ahjussi, our hyung fixed your window, right? He did that by ripping out our house’s window frame, fuuuuck!! When you get down to it, I have a stake in it too!! Because of our hyung that you all happily exploit, I’ve suffered no small amount of damage myself, you know!? Huuuuh?”I raised my chin high and glared at them.As I twisted my body around while shouting loudly, those who’d been gossiping backed away with pale faces.I can’t live like this!!!I can’t live with this injustice!!I’m not living with hyung anymore!Just as I was fuming while making that vow to myself, someone came rushing over with rapid steps.“Reeeen!”It was hyung.