The seventh Blue Reflection: Sword of the Girl Who Dances in Illusions character trailer introduces Sarasa Morikawa.
As previously detailed, Sarasa Morikawa is a ballet dancer who competed furiously with Hinako when they were in middle school. As a born dancer, she is a natural at all sorts of dance, including ballet. When Hinako had to retire ballet as an after-effect of her injury, Sarasa became the top dancer of their generation. She has a strong rivalry with Hinako and takes a severe attitude towards her, but she is normally a sociable type who is friends with everyone around her.
Watch the trailer below.