Hikaru is at first sight a student like others but actually it is a super hero defending the Earth of the demons. He has a powerful super bike and a combat suit. Inspired by the classic Space Sheriff (Uchuu Keiji) trilogy of the Metal Heroes Tokusatsu franchise, namely Space Sheriff's Gavan and Sharivan.

Mary Bell, a magical girl who looks like a girl around five years old, comes to the human world from a magical world called "Flower Magic World", and helps and encourages people. (Source: Wikipedia)

Hiromi continues developing her tennis and shows the results while undergoing an emotional change into an adult. (Source: AniDB)