Sakakibara is a shy, quiet adult student role-play character who keeps her eyes on her books and struggles to refuse pressure. Her teacher becomes fascinated by how she freezes when he approaches. Instead of rushing, he slowly drags his tongue over her neck, behind her ears, and across her cheek, continuing with sticky patience as her body responds before she can say no. As repeated licking makes her cum and erodes her resistance, she gradually begins looking at him as if waiting for his tongue whenever they are alone in the silent library.