Four years before Akibaranger, there was this short series about a three women super heroine team (a gravure model, a mangaka and a maid) who protect the electric city from creepy nerds turned evil.

Akiballion: Battlemaids of Akihabara

Three girls are selected to collect information on the places renowned as psychic phenomenon in Kanto Area. They are Miri Hanai, Saya Hikita and Reimi Tachibana. Although all of them have ”the 6th sense,” Hikita is the most spiritual and in fact, she enjoys the flourishing career as a spiritual idol. As they go around the spots, they experience various unnatural phenomenon.

Haunting Places Report

After the death of her friend, a schoolgirl finds herself in danger from a mysterious spirit.

Teke Teke

Two high schoolers, Mai and Ayumi, are transformed into superhuman fighters after being captured and genetically modified by the sinister Bogue organization. Donning suits powered by swan and wildcat genes, they escape and join forces with Mai's investigator aunt Reiko, whose life is in danger after being captured. Racing to save her, their desperate struggle for justice begins!