Yuuki Yuuna wa Yuusha de Aru
In her everyday life, Yuuna Yuuki is a hero. As proof, she is in her middle school’s Hero Club, where she does her best to help others and bring a smile to everyone’s face.
But Yuuna, always up to any task, is about to become an even bigger hero. Mysterious destructive forces called Vertexes begin threatening the world she loves, and the Hero Club is called upon by a strange phone app to save it. Along with her best friend Mimori Tougou, as well as sisters Fuu and Itsuki Inubouzaki, they must transform into magical girls in order to battle the Vertexes.
In between studying and putting on shows for kids, Yuuna and the Hero Club must fight for the very existence of their world and face the harsh truths behind their own powers, all the while discovering what it truly means to be a hero. Summary from My Anime List.
Kantai Collection: KanColle
With the seas under constant threat from the hostile “Abyssal Fleet,” a specialized naval base is established to counter them. Rather than standard naval weaponry, however, the base is armed with “Kanmusu”—girls who harbor the spirits of Japanese warships—possessing the ability to don weaponized gear that allows them to harness the powerful souls within themselves. Fubuki, a young Destroyer-type Kanmusu, joins the base as a new recruit; unfortunately for her, despite her inexperience and timid nature, she is assigned to the famous Third Torpedo Squadron and quickly thrust into the heat of battle. When she is rescued from near annihilation, the rookie warship resolves to become as strong as the one who saved her. Summary from My Anime List.