If you're looking for anime similar to Gifuu Doudou!! Kanetsugu to Keiji, you might like these titles.
When Jonathan Joestar was just a baby, his mother tragically died in a carriage accident, and his father George was saved by the kindness of a stranger, Dario Brando. At least, that's what George believed, unbeknownst to him that Dario was just attempting to steal from the victims. Thus, when Dario later dies and his son, Dio, comes to his doorstep, the wealthy George eagerly adopts the boy. But what should have become a budding friendship between two siblings quickly becomes a nightmare for poor Jonathan, as Dio is cruel, calculating and will go to great lengths to become George's primary heir. Little does Jonathan know that this unfortunate childhood is only the harbinger of things to come...
If you somehow managed to enjoy Gifuu Doudou then you should really take a look at JoJo's Bizarre Adenture (2012).
Gifuu Doudou is full of manly men being men with the odd fighting scene, so if that interested you in the slightest then JoJo should blow your mind. It has seriously manly men fighting in epic battles, dudes shouting all the time, a script full of awesome catchphrases and over the top action at every turn.
And if you hated Gifuu Doudou, then watch JoJo anyway, it's a thousand times better in every way possible.
The greatest thing they have in common? Incredibly manly men. The men are RIPPED. Bristling with muscles that threaten to make their clothing explode if they flex, giant necks bigger than the length of both your hands, larger than puny wussier non-muscular (Everybody is nonmuscular in comparison) and just so crazily buffed that it's pure testosterone.
Otherwise, Keiji deals in samurai while Jojo is more about generation stuff, a bit of manly events in one era and flex plex manly events in another era. But simply put, where Keiji falters in being constantly entertaining, Jojo triumphs for the sheer amount of cheese and ham with the quite frankly better action scenes. Keiji has the muscles and buff necks but Jojo has the entire manly package.
Imagine a world devastated by nuclear war, where the strong oppress the weak and strength is the one thing that will ensure survival. A world where even close friends can betray you for power, a lesson that Ken, the Fist of The North Star, learns when he is nearly killed by his closest friend and left for dead. He's not an easy man to get rid of, and he returns - very angry.
Both anime reek of testosterone and involve manly men doing manly things. Also, the character designs of both series are similar. While they have different plots and different settings, I think those who like one may like the other.
In the age of civil war, when the shadow of Nobunaga Oda was still cast over the land, the warlord Furuta Sasuke lost his soul to the tea ceremony. While war shook the world around him, he faced his own conflict between his desire for promotion and his love for his art.
In a war-torn feudal Japan of mechs and magic, a retired ronin must take up his sword when he is charged with the task of transporting a mysterious child who dark forces want to eliminate.
In the bloody Warring States period of feudal Japan, many generals fought in an endless struggle for power, but one man proved to be too big a threat - The dark lord Oda Nobunaga. Sanada Yukimura and Date Masamune, two young warriors from different regions who become heated rivals, begin to form an unlikely alliance with the rest of the generals to take down the Devil King.
The time is centuries ago, during the Sengoku period; the place is feudal Japan. Political ambitions and bloodshed run rampant as rival warlords battle it out in an attempt to rule the nation. Some seek to spread their noble ideals, some seek to protect justice and yet others seek destruction. Date Masamune, Sanada Yukimumra and a variety of other warriors will fight it out time and time again; their actions helping to ultimately decide the fight of Japan.
In the mid 1800s, prior to the fall of the Tokugawa Shogunate, two men lead very different lives in the city of Edo. Ibuya Manjiro is a would-be samurai who refuses to back down from a fight, and Ryoan Tezuka is the son of a well-known doctor and student of Western medicine. Both are looked down upon by members of the community – Ibuya for his heroic behavior that makes his dojo look bad, and Ryoan for following a form of medicine that Japan, as a whole, shuns. Though the two are on very different paths, their lives inevitably cross in romance, times of need, and the changing of history...
Samurai Warriors focuses on the Sanada brothers during the Sengoku era of Japan. In late 16th century, the era of civil war that tore Japan over two centuries is nearing its end and the regional warlords who survived the bloodsheds are ready for a final showdown. In the battlefield where your best ally turns out to be your worst enemy, only the shrewdest can come out alive.
Oda Nobunaga saves a girl from drowning one day. She clumsily tells him that she's a shinobi. Instead of attempting to kill him, she swears to serve him one day after hearing his plans to unify Japan.