Nano Invaders

"Nano Invaders" centers on Hikaru, an 11-year-old boy who gets caught in an intergalactic conflict. After trying on a bracelet belonging to his classmate Mimi, he transforms into a monster. Mimi's family, hailing from planet Anima, is a special scouting unit. When hostile aliens from planet Damon attack the city, Hikaru joins Mimi and her family in battle, their heroic actions broadcast on television. This newfound fame fulfills Hikaru's dreams, but he remains oblivious to the hidden agenda of Mimi's family, who are secretly plotting to seize control of Earth. The anime explores themes of heroism, deception, and the clash between good and evil, all within a backdrop of alien invasions and monstrous transformations.