Juvenile Orion

A 16-year-old girl named Mana returns to her hometown to reunite with her childhood friend, Kaname, after seven years apart. Over time, Kaname appears to have changed, and her return triggers a series of events that significantly impact him and his close friend, Naoya. Mana's presence also draws in their classmates, Isshin and Tsukasa, and their teacher, Tomonori. As they become entangled in her life, they learn they are part of the Aquarian Age, an ancient and ongoing secret war. Mana's return sets the stage for a pivotal moment, as the world's fate becomes uncertain.