There is no more introduction, because all the books were stolen by Marisa

The name 「白澪」 represents a girl who is pure and cool as water.

「白澪」这个名字代表着纯洁、清越像水一样的女孩子呢

Regarding "Mioursaki", this name is a combination of my favorite color [Purple - Murasaki] and my first name in Chinese nickname [澪 - Mio] in Japanese Romanization.