Supernatural / Dungeon / Historical / Isekai (no romance)

When I woke up, I became the villain of a martial arts novel! But the body I possessed happened to be the extra character of a disastrous villain ? [ Hyuk Ryeon-Un / The fourth son of Demon Sect. Leader / A scoundrel, a playboy, has weak combat techniques and a nasty temper] Hyuk Ryeon-Un, the insignificant villain of the demon sect’s young master who died with a single slash by the main character in the novel! He had no choice but to become stronger in order to survive from the main character.

Kim Jun-Woo, the world’s first SSS rank genius hunter is an incredible user of ability, but his horrible personality leads to problems with his reputation.
In the midst of his troubles, he was attacked and killed by an unidentified group.
And when he opened his eyes, he had returned to the past of 10 years ago.
He tries to become a hunter again and raise his rank, his skills were all sealed by the karma of his previous life.
In order for it to be released, he needs to work as a ‘Dungeon Cleaner"

there was no more that I could accomplish in the human realm. To reach the peak of martial arts, I must become a saint! “I finally succeeded!!!” “Stop! Your ascension is not permitted!” The other saints refused my ascension due to my karma after much slaughter, and I fell, just like that. When I woke up, I was 60 years in the future. I was reborn as the second lord of the Namgoong family, Namgoong Hyuk. Where has all the internal energy that I've accumulated gone?!

My dream is to become an escort warrior. But I’ve got a limp leg and I’m unable to learn decent martial arts. I’ve lived as a porter working odd jobs for the entirety of my life. Until I died because of the mountain bandits that I met during an escort mission. But… ‘I became the fourth young master, Lee Jungryong?!’ When I died and woke up, I was reborn as the Heavenly Dragon Escort Agency’s infamous good-for-nothing youngest son. The weakling, Lee Jungryong, will become the best escort warrior.

Waking up, Kim Hajin finds himself in a familiar world but an unfamiliar body. A world he created himself and a story he wrote, yet never finished. He had become his novel’s extra, a filler character with no importance to the story. The only clue to escaping is to stay close to the main storyline. However, he soon finds out the world isn’t exactly identical to his creation.

Kim Soo-Ho, a civil engineer, became a noble from a novel. But what's this? My estate will be destroyed soon? Then I'll have to design, build and sell.

Tower Defense & Dungeon Attack RPG I saw the ending to the game no one was able to clear. But, when I came to my senses, I was inside of the game. In fact, I was in the tutorial stage, a place where strategy was impossible.

Chung Myung, The 13th Disciple of the Great Flowery Mountain Sect, One of the 3 Great Swordsmen, Plum Blossom Sword Saint, defeated Chun Ma, who has brought destruction and disarray onto the world. After the battle, he breathes his last breath on top of the headquarter mountain of the Devil’s Worship Sect. He is reborn after 100 years in the body of a child. ……What? The Flowery Mountain Sect has fallen? What kind of nonsense is that!?

Mc was transported into the romantic fantasy novel his younger sister was reading, not as the male lead but as the second male lead. Moreover he is fated to go into war in the future and die in the male lead’s place.So he made up his mind to not go anywhere near the main characters and stay healthy until he can go back home.

Until recently, I had three wishes that I could only hope to come true. ‘Please let my missing oldest brother come back.’ ‘Please let my Second Brother awaken so he could stop working as a rift porter.’ ‘And my youngest brother…As long as he can open his eyes…’ There’s nothing I wanted but happiness… was what I thought…! “Keuhk…I’ll only play for 10 years so I can keep the darkness inside me, so work a little harder, youngest!” My oldest brother spoke as though he were still in his adolescence.