Alma Tandouji is the main hero in the anime series, Sacred Seven. He has the Ruri Aiba is the female protagonist of Sacred Seven. She is the leader of the Aiba Foundation. She is the daughter of a billionare noble family who were killed by a Darkstone. She created Aiba Foundation to combat against the Darkstones. She is a Lightstone that has the ability to turn a crystal into a Lightstone and insert it into Alma to control his true powers. She became chairman of Alma's school (where she heavily renovated the school) to keep in contact with Alma. She has a twin sister namedAoi who also survived the Darkstone aftermath, but was crystallized. Her whole foundation is occupied with all female maids.
She was voiced by Megumi Nakajima.
She is a relatively short girl. At best, she only reaches Alma's midsection and is a few inches shorter than Wakana. She has long red hair and green eyes.
Ruri has shown a few sides of her personailty that could be considered contradicting. she is very knowledgable in matters conserning business as she is able to manage her families corporation, serious when fighting the dark stones, naive when it comes to mundane matters like what the pinky signify in japan (this was humorously shown unowingly admiting that she was Alma's girlfriend as she said "she was his" and raising her pinky finger) it is shown a few times that she can have a stuborn streak. During the rest of the fewer wars, Ruri is determinable to protect humanity by helping Alma Tandouji just before the saving the day and the rest of the world. She very supportive, protective, and diligent to help the Alma Tandouji to be a true hero in case of an emergency.
Crystal Manipulation - Ruri can create, shape and manipulate crystals and crystalline materials: homogenous solids formed by a repeating, three-dimensional pattern of atoms, ions, or molecules and having fixed distances between constituent parts.
Reflection Manipulation - Ruri can create, shape and manipulate reflections, by controlling and/or using mirrors and/or reflecting surfaces that can be used to reflect/redirect attacks. Users can turn the reflections into real objects/beings, turn mirrors and reflections into prisons, storage-places or dimensions of their own use, manipulate space inside reflections, and so on.