Fics like The Trash's Number One Fanboy

Kim Roksoo was a sensible person— until Jung Soo lends him a novel that changes his life forever. Inside the story, there’s a minor villain. A background character. A trash. His name? Cale Henituse. Kim Roksoo becomes instantly obsessed. Soon, his every waking moment is filled with theories, fan art, and long rants about how “everyone is wrong about Cale!” And his poor, long-suffering hyungs get dragged into this obsession too. But when the novel suddenly disappears just before Cale’s homeland is about to be attacked, they lose their minds. And when they confronted the culprit, instead of giving their book back, that bastard GoD is asking their help to save that very world! But the trio isn’t listening. “You took our book, didn’t you?!” “Give. The. Book. Back.” “Or prepare to die.” Three angry fanboys vs one divine entity. Guess who wins. Now, the trio finds themselves inside the novel world, on a mission to “help in a coming war.” But do they care about that? No. They’re here for one thing only. To find the allegedly-trashy Cale Henituse and prove that everyone is wrong about the beautiful “trash” noble.

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The Birth of a Villain by Zell_Hatoule (백작가의 망나니가 되었다 - 유려한 | Lout of Count's Family | Trash of the Count's Family - Yulyeohan)
I just can’t see the simple things I can’t keep, what am I supposed to be? by lyle (백작가의 망나니가 되었다 - 유려한 | Lout of Count's Family | Trash of the Count's Family - Yulyeohan)
Chorus Call (백작가의 망나니가 되었다 - 유려한 | Lout of Count's Family | Trash of the Count's Family - Yulyeohan, 데뷔 못 하면 죽는 병 걸림 - 백덕수 | Debut or Die - Baek Deoksoo)
Let me Slack! by TheHopelessSlacker (백작가의 망나니가 되었다 - 유려한 | Lout of Count's Family | Trash of the Count's Family - Yulyeohan, 전지적 독자 시점 - 싱숑 | Omniscient Reader - Sing-Shong)
From Illusion to Reality by Amaliala (백작가의 망나니가 되었다 - 유려한 | Lout of Count's Family | Trash of the Count's Family - Yulyeohan)
MOMMY CALE AND BABY ROKSOO’S CHRONICLES (백작가의 망나니가 되었다 - 유려한 | Lout of Count's Family | Trash of the Count's Family - Yulyeohan)
I'm not a Saint! by ThineHighness (백작가의 망나니가 되었다 - 유려한 | Lout of Count's Family | Trash of the Count's Family - Yulyeohan)
Why are there so many gods here??? by Laced_Tea (백작가의 망나니가 되었다 - 유려한 | Lout of Count's Family | Trash of the Count's Family - Yulyeohan, 전지적 독자 시점 - 싱숑 | Omniscient Reader - Sing-Shong)
Home Is Where the Doctor Is by artificialslover (백작가의 망나니가 되었다 - 유려한 | Lout of Count's Family | Trash of the Count's Family - Yulyeohan, The Avengers (Marvel Movies))
Cale’s Guide To Raising A Fox! (And Other Related Species) by FanTrashStick (백작가의 망나니가 되었다 - 유려한 | Lout of Count's Family | Trash of the Count's Family - Yulyeohan)
Patchwork Soul by ThisIsVee (백작가의 망나니가 되었다 - 유려한 | Lout of Count's Family | Trash of the Count's Family - Yulyeohan)
Treasure of the (Vampire) Duke's Family?! by realfakedokja (백작가의 망나니가 되었다 - 유려한 | Lout of Count's Family | Trash of the Count's Family - Yulyeohan)
Cale Henituse and His Stupidly, Idiotically Powerful Brother by orphan_account (백작가의 망나니가 되었다 - 유려한 | Lout of Count's Family | Trash of the Count's Family - Yulyeohan)
bastards by kariselvrrie (백작가의 망나니가 되었다 - 유려한 | Lout of Count's Family | Trash of the Count's Family - Yulyeohan)
ignoring my problems is always a choice by strwbrrykitty (백작가의 망나니가 되었다 - 유려한 | Lout of Count's Family | Trash of the Count's Family - Yulyeohan)
Vikings, meet Cale by Reltu (백작가의 망나니가 되었다 - 유려한 | Lout of Count's Family | Trash of the Count's Family - Yulyeohan, How to Train Your Dragon (Animated Movies), more)
Honeyed Disaster by TiredBananaWannaRetire (백작가의 망나니가 되었다 - 유려한 | Lout of Count's Family | Trash of the Count's Family - Yulyeohan)
young master, you dumb bitch by salaapaoo (백작가의 망나니가 되었다 - 유려한 | Lout of Count's Family | Trash of the Count's Family - Yulyeohan)
Through Colored Eyes by moonlightcarol (백작가의 망나니가 되었다 - 유려한 | Lout of Count's Family | Trash of the Count's Family - Yulyeohan, 原神 | Genshin Impact (Video Game))
Beginning of the End by who_stole_my_fries (백작가의 망나니가 되었다 - 유려한 | Lout of Count's Family | Trash of the Count's Family - Yulyeohan)