Description

Hikaru is kind of person who will lend out a helping hand even if it means misfortune for herself. That was also the way how she met Umi and Fuu - it was raining and she lent her umbrella to another student whom she didn't even know, lying that she has another umbrella for herself. Umi and Fuu then invited Hikaru to go home with them so they can share umbrellas between the three of them.

Hikaru is very unset that they will all be going their separate ways after graduation (Hikaru returning to Hokkaido, Umi will be moving to Kanazawa and Fuu will be going overseas). The three of them made an oath at the oriental cherry tree at the school grounds that legend says will grant any wish. That oath and Hikaru's strong will to be with her friends also makes her the first to receive the Ovum as well as being able to summon Mashin Lexus to fight the Cefiro invaders.