Baki x fluffys (by tequila)

[Tequila]

[Fluffy_Sea_dragon2]

nice

[Huggies4Buggies]

Is this a reference to a manga? I know the historical Miyamoto Musashi, but this looks like a manga panel.

[StoneRouge]

It’s a manga and an anime.
https://anilist.co/manga/35157/Baki-The-Search-of-our-Strongest-Hero/
https://anilist.co/anime/97888/BAKI/

[FallenAngel007]

Yup it was from Baki the Grappler, a cloned Miyamoto Musashi body and imbued with his actual soul by a caster.