Ep 3. Act 3 REI - SAILOR MARS

In "Sailor Moon Crystal" season 1 episode 3, titled "Act 3 REI - SAILOR MARS," the story follows the introduction of another Sailor Guardian, Sailor Mars. After discovering the identity of Sailor Moon, Rei Hino, who possesses psychic powers, becomes suspicious of Usagi's true intentions. Despite their initial misunderstandings, the two girls eventually form a bond and work together to protect Tokyo from the dark forces that threaten it.

The episode begins with Usagi and Ami attempting to find the third Sailor Guardian, who is said to possess great power. They eventually come across a flyer advertising a local shrine, which they decide to investigate. At the shrine, they meet Rei Hino, a young girl who lives with her grandfather and works as a miko, or shrine priestess. Rei appears to have a cold and aloof personality, and initially dismisses Usagi and Ami's claims about their mission. However, upon sensing a mysterious presence at the shrine, Rei reveals her true identity as Sailor Mars.

As Sailor Mars, Rei possesses the power of fire and is skilled in combat. She is initially suspicious of Usagi's motives, believing that she may be connected to the dark forces that she has been sensing. However, Usagi is determined to prove that she is on the side of justice, and the two girls begin to work together to investigate the mysterious energy signatures that have been causing havoc throughout Tokyo.

Throughout the episode, the relationship between Usagi and Rei evolves, with Usagi attempting to break through Rei's cold exterior and understand her better. Rei's psychic powers allow her to detect danger before it happens, and she often acts as a guide to the other Sailor Guardians, helping them to anticipate potential threats. While she may be standoffish at times, Rei is fiercely loyal to those she considers her friends, and is willing to risk her own safety to protect them.

As the episode progresses, Sailor Mars faces off against a powerful monster, using her fiery powers to defend herself and her allies. In the end, she emerges victorious, and Usagi realizes that she has found a true friend in Rei.

Overall, "Act 3 REI - SAILOR MARS" is a compelling episode that introduces another complex character to the series. With action-packed battle scenes and the development of important new relationships, it is an essential watch for fans of the series.