White Cosmos  

In an attempt to get the Seven Roses, a special gun created by Red Rider, White Cosmos manipulated her Child, Black Lotus, to kill him. She fabricated a reason that Red Rider plans to force the maintenance of the Peace Treaty by giving each a gun. This gun would decimate any attacking legion.After Nega Nebulus disbanded, Kuroyukihime found the Seven Roses in her inventory. She tried to fire it however it would not. She realized this gun was meant as a symbol of peace and friendship. It has been said that she appears to be kind, but in actuality, she is very manipulative in nature. This manipulative personality is seen in an episode where she set up a meeting with the Six Kings of Pure Color to have Red Rider killed by Black Lotus, as well as what she had done to Kuroyukihime at past according to her memory. It is later revealed that she is the Parent and real life sister of Kuroyukihime. White Cosmos also participated in the torture of Saffron Blossom, alongside Black Vise and Argon Array. She also witnessed the birth of Chrome Disaster. Her reasons for joining is currently unknown. In Volume 14, it is confirmed that she is, in fact, the president of the Acceleration Research Society. Red Rider created it with the belief that their friendship would continue. Kuroyukihime confronted her sister. She demanded White Cosmos to duel her. However, White Cosmos replied that Kuroyukihime could never beat her. Realizing this, Kuroyukihime took out a boxcutter and wounded White Cosmos. It was a small wound, however White Cosmos made it larger. This resulted in Kuroyukihime being exiled from her family.