"Tiger Mask" is a classic wrestling-themed anime series that originally aired in 1969, based on the manga by Ikki Kajiwara and Naoki Tsuji. The narrative centers around Naoto Date, a professional wrestler who adopts the persona of Tiger Mask, a mysterious and skilled fighter. Naoto was once an orphan raised in a harsh environment at the Tōhoku Animal Land orphanage, where he was trained to become a ruthless wrestler for the underground organization known as Tiger's Den. After achieving fame and success, Naoto becomes disillusioned with the corrupt and exploitative nature of the organization and decides to leave, vowing to use his skills for good.

As Tiger Mask, Naoto competes in professional wrestling matches, quickly gaining recognition for his exceptional talent and unique tiger-themed mask. His decision to leave Tiger's Den angers the organization, which sends other wrestlers, also trained in the same brutal methods, to eliminate him. Throughout the series, Naoto faces numerous adversaries, both from Tiger's Den and the wrestling world, while striving to protect his identity and uphold his newfound moral code.

A significant subplot involves Naoto's relationship with the Tōhoku Animal Land orphanage, where he secretly donates his wrestling earnings to support the children. This act of kindness contrasts sharply with his violent past and highlights his redemption arc. The series also explores themes of loyalty, honor, and the struggle between good and evil, as Naoto battles not only physical opponents but also his own inner demons.

The character of Tiger Mask became iconic in Japanese pop culture, symbolizing the underdog who rises against adversity. The series blends intense wrestling action with emotional storytelling, creating a compelling narrative that resonated with audiences. Supporting characters, such as Ruriko Higuchi, a journalist who becomes romantically involved with Naoto, and Mister X, a recurring antagonist from Tiger's Den, add depth to the story and contribute to the ongoing conflict.

"Tiger Mask" is notable for its influence on the sports anime genre and its portrayal of professional wrestling as a dramatic and heroic endeavor. The series remains a significant part of anime history, remembered for its engaging plot, memorable characters, and exploration of moral redemption.