Before her psychotic breakdown, Saiko is a timid and shy girl who is nerdy, soft-spoken and keeps to herself while secretly being mentally ill, as a result, she is extremely sensitive and takes matters to the heart. When dating Akira however, some of her prominent traits come to light such as her excessive clinginess, unhealthy obsession and over-dependence of him due to her deep love for him as well as her lack of understanding of the creepiness and discomfort of her actions towards him due to 