[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/lion_maru_bd.jpg]]
[[caption-width-right:350:''Lion-Maru has arrived!"]]

''Kaiketsu Lion-Maru'' was a [[{{Toku}} tokusatsu]] series running from April 1, 1972 - April 7, 1973 with a total of 54 episodes.

During the late 16th century, a trio of ninja orphans are wandering Japan and saving people from evil, specifically the evil Devil Gosun. These people consist of [[TagalongKid kid ninja Kosuke]], [[TheLancer kunoichi Saori]] and [[TheHero an adult ninja named Shishimaru]]... who can transform into a [[KingOfBeasts lion-headed]] {{Samurai}} named Lionmaru.
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!!This work contains examples of:
* BigBad: The demon lord Gohsun, who takes the opportunity to invade Japan ravaged by war.
* BittersweetEnding: Tiger Jo dies, then later Lion Maru defeats Gohsun from going inside to attack his heart, making him explode. Saori and Kosuke wander off to a peaceful land.
%%* TheDragon: Debonoba
* EvilCounterpart: Tiger Jo is Lion Maru's rival and evil equal counterpart.
* EyePatchOfPower: Tiger Jo has a pretty cool eyepatch.
* FinishingMove: After cutting the monster, Lion Maru runs his hand down the back of his sword, causing the MonsterOfTheWeek to explode in a big bang.
* InTheNameOfTheMoon: "Kaze O! Hikari O! Ninpô Shishi-Henge!" ("Oh Wind, Oh Light, Ninja Skill, Lion-Transform!")
* {{Jidaigeki}}: The show takes place in the late 16th century and the heroes are three ninjas.
* {{Mooks}}: The Skull Ninjas, undead warriors with a skull for a face. They serve as the expendable minions of the various monsters of the week.
* MonsterOfTheWeek: It wouldn't be a {{Toku}} without them. Gohsun's demon warriors serve as this.
* KingOfBeasts: Or else why would it be called 'Lionmaru'?
%%* TheLancer: Saori.
* MeaningfulName: The 'Shishi' in Shishimaru means Lion.
%%* TagalongKid: Kosuke
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