Tenkaichi - Nihon Saikyou Bugeisha Ketteisen - Vol. 1 Ch. 1 - 魔王的遊戲

[MangaDex]

 

[Krune]

Wait was that both Keiji Maeda and Shingen Takeda in an alternate historical take of the Sengoku era?....Okay I'm interested though I will still be bummed with a lack of ya bois Yukimura Sanada and Kenshin.

 

[Aguecor]

@Krune

Sorry to tell ya, but none of those big names are participating on the tournament

The contestants are (I traslated the names myself)

Honda Tadakatsu vs Miyamoto Musashi

Fuuma Kotarou vs Toda Seigen

William Adams vs Yagyuu Munenori

Kamiizumi Nobutsuna vs Daihannya Nagamitsu (This one is more of a guess; I couldn't actually find any fighter with his name, but he shares the name "Nagamitsu" with a famous swordsmith and his creations; supposely, Nobunaga owned a sword of his called the Daihannya Nagamitsu, and since this big fellow's mask kinda looks like a hannya mask, my guess is that they turned the sword into a loyal subject of Nobunaga in the manga)

Sasaki Kojiro vs Hattori Hanzo

Togo Shigekata vs Yasuke

Hozoin Inshun vs Hayashizaki Shigenobu

Itou Ittosai vs Ogasawara Nagaharu

These are the names on the tournament bracket from left to right

 

[Krune]

@Aguecor thank you for the response I was honestly surprised anyone would respond considering which comment section I left it in.
Though lol I honestly wouldn't consider the likes of Honda Tadakatsu and most of the competitors on that list, thank you for the translation btw, minor historical figures or randos. They may not have had their own factions back then but they were some pretty impressive military officers, swordsmen and a couple of spearry bois.