The announcement by the production studio about the creation of High School Fleet anime series.
The original High School Fleet TV anime series premiered in Japan, introducing the story and characters.
The airing period of the High School Fleet original anime series on Japanese television.
Home media release of the High School Fleet anime allowing fans to own the complete series.
Announcement of the production of a movie continuation of the High School Fleet series.
Release of High School Fleet movie, continuing the story from the original anime series.
The establishment of the elite maritime team responsible for navigating and protecting the seas around Japan, marking the beginning of the Blue Mermaids program.
The main characters undergo rigorous training in seamanship, navigation, and combat as part of the Blue Mermaid program at Yokosuka Girls High School.
Harekaze, led by Captain Akeno Misaki, embarks on their final mission as part of their graduation requirements, setting the stage for the main storyline.
During their mission, Harekaze encounters and engages with an unidentified pirate group, leading to critical challenges and suspicions regarding their mission's true nature.
The crew uncovers the underlying conspiracy and identifies the actual antagonists behind the pirate activities, altering the mission's objectives.
Completing their mission, the crew of Harekaze resolves the conflict, restoring safety to the seas and returning home as graduates of the Blue Mermaid program.
