The two twins go by the names Raven and Sarah. The two angels guard the two keys that give the ability to change time or go to a certain time, and if anyone distorts or changes time... its there job to change it back... but Raven takes on the job of k.illing the one resonsible for changing time... the sensitive one, Sarah, cant bear doing it.
Raven is the sacred protector of the key to the future, while Sarah is protector of the past.
These girls are my old characters from flipnote hatena.