Chouriki Sentai Ohranger: Series Season 1 Episode 1 Chouriki Sentai Ohranger: S1 E1 - Invasion!! 1999

Chouriki Sentai Ohranger: Series season 1 episode 1, titled "Invasion!! 1999," introduces us to the world of the Ohrangers. The episode begins with a sequence showing five giant robots fighting a massive alien spacecraft. However, it soon cuts to a quiet classroom where our main character, Goro Hoshino, is teaching a group of students about the history of ancient civilizations. After class, Goro receives a message from his boss, commanding him to attend an urgent meeting.

When Goro reaches the emergency meeting, he and four other individuals are informed of an alien invasion that will take place at midnight. They are tasked with stopping the aliens from taking over Earth in a matter of hours. After receiving special powers from their boss, they transform into the Ohrangers; each sporting a unique-colored armor.

As they suit up, the five Ohrangers head out to Tokyo's iconic Rainbow Bridge, which ends up being the location of the alien's base. The aliens' first move is to deploy an amphibious monster that crawls onto land and begins to wreak havoc. The Ohrangers quickly deal with the monster to stop its destruction. However, the aliens deployed additional monsters, resulting in a series of battles between the Ohrangers and these creatures.

The battles are intense and filled with action; they show how diverse each Ohranger member is, both in terms of their powers and fighting styles. The team also makes use of their unique vehicles and weapons, which have impressive capabilities. The humanoid robots from the opening sequence also enter the fray, becoming the key to defeating the ultimate threat that the aliens impose.

Apart from the battles, the episode also features some comedic moments and interesting character dynamics. For example, Shohei Yokkaichi, the team's blue ranger, is shown to be a fun-loving individual who likes to dance and make jokes, while powerhouse Momo Maruo, the pink ranger, shows her brave personality when she counters the monsters in her giant pink tank.

The episode ends with a scene teasing the villainous grand scheme of the aliens, hinting that the Ohrangers will soon have to face even more significant challenges in the future. Overall, Chouriki Sentai Ohranger: Series season 1 episode 1 is an exciting and action-packed introduction to the world of Ohrangers, with memorable characters, great battles, and a compelling storyline.