Samurai Reincarnation (1981)

these two movies seem to have an almost identical plot, judging by the synopsis. i think samurai resurrection might actually be a remake, since the main characters have the same name, etc

Both are epic jidaigeki Samurai horror youkai demon movies that star Sonny Chiba, Hiroyuki Sanada, directed by Kinji Fusaku. Both movies are based on classic epic jidaigeki tales, novels.

Both movies are about a sorcerer resurrecting famous dead warriors from past for vengeance, set in different eras. Both are classic epic horror tales.

Both are about dead spirits being resurrected as demons to extract vengeance
Both have intense swordplay