Itagaki, Keisuke

After 18 years of fighting and pushing his body beyond its natural limits, Baki Hanma is almost ready to face his father Yuujirou in one final battle. Publicly challenging his father to a revenge bout for the title of "World's Strongest," Baki sets out to train himself even further. He targets the few men who are said to hold comparable power to Yuujirou, including the "Unchained" bounty hunter Biscuit Olivia and a prehistoric human named Pickle revived from the Mesozoic era.

The demonic Yuujirou monitors his son's training with a growing anticipation. The "Ogre" sees Baki as little more than a savory meal marinating for him to devour. Still, Yuujirou exists in solitude at the top of the mountain of strength. He yearns for a combatant to rise up and prove themselves a worthy opponent capable of giving him a challenge. Despite viewing his son as pathetic, Yuujirou can't help but hope his child will be the one to give him the thrill of equal combat he has lived so long without.

As Baki seeks to understand his father's monstrous legacy, Yuujirou comes to terms with his true feelings toward his son. The two Hanmas advance toward their climactic fight to decide who is really the "World's Strongest."

[Written by MAL Rewrite]

Hanma Baki

範馬刃牙

Miura, Kentarou

Studio Gaga

Guts, a former mercenary now known as the Black Swordsman, is out for revenge. After a tumultuous childhood, he finally finds someone he respects and believes he can trust, only to have everything fall apart when this person takes away everything important to Guts for the purpose of fulfilling his own desires. Now marked for death, Guts becomes condemned to a fate in which he is relentlessly pursued by demonic beings.

Setting out on a dreadful quest riddled with misfortune, Guts, armed with a massive sword and monstrous strength, will let nothing stop him, not even death itself, until he is finally able to take the head of the one who stripped him—and his loved one—of their humanity.

[Written by MAL Rewrite]

Included one-shot:
Volume 14: Berserk: The Prototype

Berserk

ベルセルク

Samura, Hiroaki

Manji is an infamous swordsman in feudal Japan who is known as the "Hundred Man Killer," as he has killed one hundred innocent men. However, there is something far more frightening than his ominous reputation: the fact that he is immortal. This is the handiwork of eight-hundred-year-old nun Yaobikuni, who placed bloodworms capable of healing almost any wound in Manji's body. 

To atone for his crimes, Manji resolves to kill one thousand evil men. Yaobikuni agrees to this proposal, saying that if he succeeds, she will undo his curse of immortality. Soon after this promise, Manji meets Rin Asano, a 16-year-old girl who requests Manji's assistance in killing those who slaughtered her parents.

Initially reluctant, Manji refuses Rin's desperate plea. However, owing to her evident lack of strength, Manji changes his mind and agrees to protect Rin for four years. With this partnership set in stone, the two embark on a perilous journey of bloodshed, vengeance, and redemption, each to fulfill their own life's cause.

[Written by MAL Rewrite]

Mugen no Juunin

Blade of the Immortal

無限の住人

LICO

Biga

When Cheongmyeong of the Mount Hua Sect awakens a hundred years in the future, his last memories are of a bloody battle against the Leader of the Demonic Cult, the evil Cheonma. The battle almost saw the end of the Ten Great Sects of ancient China, when Cheongmyeong ended the hard-fought struggle by striking down Cheonma. Soon after, he succumbed to his wounds, filled with regret at their pyrrhic victory. All is not lost, however, as he awakens to his second chance at life. Shocked to find his beloved Mount Hua Sect reduced to a mere shadow of itself in the present day, Cheongmyeong embarks on a journey to restore Mount Hua to its former glory.

(Source: Webtoon Entertainment)

Return of the Blossoming Blade

화산귀환

Mun, Jung-Hoo

Ryu, Ki Woon

When his master dies, Gang Yong pledges to avenge his teacher at all costs. After training his martial arts skills in seclusion, Gang Yong sets off to hunt down the traitors and make them pay! But when he gets to town, he discovers they're... already dead? Well, what's he supposed to do now?!

(Source: Webtoon Entertainment)

Gosu

고수

Yu, Wo

Ya Sha

Set in 2100 A.D., where video games feel 99% like real life. Follow Feng Lan in her adventure as the first player to play as the opposite sex in the VRMMO "Second Life" to prove to her brother that she can beat the game without using the "female benefits." But after she offends her family in a pvp match and even meets her real life friends and acquaintances in-game, can she continue to keep herself out of trouble by keeping her identity a secret?

½ Prince

½ 王子

Baeksu Gwijok

Morando

When Urich's daring attempt to venture near the ominous Sky Mountains with his friends gets him kidnapped, he learns that there is a new world that exists beyond his own. After a hellish fight with his attackers, he frees himself and sets off on a journey to explore this new realm. There, he encounters allies and enemies alike, each meeting helping him learn more about the civilization and grow as a warrior. But even Urich has yet to find out where his quest will truly take him...

(Source: Tapas Media)

Barbarian Quest

바바리안 퀘스트

Yongbi is a bounty hunter without fear or reproach. Especially without fear, actually. Despite his greed and his penchant for drinking (fortunately shared by his faithful horse) and women, Yongbi is still a charming young man. And when a boy carrying a medallion, source of much envy, finds himself under the protection of the adventurer, those who cross their path must prepare for the worst!

(Source: Random Scanlations)

Yongbi Bulpae

Yongbi the Invincible

용비불패

Kishimoto, Masashi

Long before Naruto Uzumaki mastered the formidable Rasengan, Minato Namikaze trains to develop the ninjutsu under the tutelage of his mentor Jiraiya. Minato strives to create his own powerful technique to protect Kushina Uzumaki, the strong-willed woman he loves.

Honoring Uzumaki clan tradition, Kushina's body hosts the nine-tailed fox spirit, Kurama. The demon seeks to break free from his confines and wreak havoc on the world. As Kushina struggles against Kurama's power and her own inner turmoil, Minato hurries to complete the Rasengan and save her from herself.

[Written by MAL Rewrite]

Naruto Gaiden: Uzu no Naka no Tsumujikaze

Naruto: The Whorl within the Spiral

NARUTO-ナルト-外伝 〜渦の中のつむじ風〜

Maekawa, Takeshi

In the previous "Kung-Fu Boy" series, Chinmi became the master of Kempo at Dairin temple, where he trained disciples. When they lose contact with Kyorinji, a temple of the same sect, Chinmi is dispatched to the Kanan Autonomous region to investigate.

He tries to enter Kanan with Pushin, a swordmaster whom he met traveling to Kanan. But they are attacked after trying to enter Kanan and pursued by the Border Police who chase them into a waterfall. A fisherman saves them and aids their entrance into Kanan. The people of Kanan are forcibly oppressed by the government. Chinmi befriends the people and makes the big decision to free them with his Kempo. Sorabi Boru, Lieutenant of the Border Police and Jirai, the evil king of Kanan attack Chinmi...

(Source: Manga-Sketchbook)

Shin Tekken Chinmi

新鉄拳チンミ

Cup Ramyeon.

Jeong, Hangil

In a world where the Han Empire never fell, martial arts is a power used to squeeze people dry. So when a new continent is discovered, both good and evil men alike flee to settle there and escape the tyranny of the Emperor, opening up the era of a Martial Wild West.

In the turbulent frontier, Zhang Qian is a man that reincarnated from our cushy, modern world, but his new world is nothing like the fantastical world he dreamed about from reading martial arts novels. While the martial arts in his new world are powerful, they are also too crude and lack elegance. And so Qian journeys along the continent for his dream of bringing true martial arts back to the new realm.

(Source: MU)

Martial Wild West

무림서부

Continues Chinmi's story in a new arc, where he along with one of his students are involved in an incident where a princess (different from the one in the first saga of "New Ironfist Chinmi") was kidnapped by bandits.

(Source: Wikipedia)

12 Manga Like Baki Gaiden: Hana no Chiharu