When monster brothers attack Tokyo, Leo remembers the loss of his own younger brother, Astra. But is Astra truly gone...?
- Ultraman Leo Volume 6 features episodes 21-24.
- This episode was later featured in Ultraman Retsuden episode 48 "Decisive Battle! Leo Brothers vs. Monster Brothers!!" and Ultraman Orb: The Chronicle episode 25 "The Leo Brothers vs the Monster Brothers - When The Lion's Eyes Shine!".
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