Kyoutaro Ichikawa may have the appearance of a typical middle schooler, but his heart is filled with murderous fantasies. It is therefore not surprising that Anna Yamada, the class idol, is constantly on his thoughts as the person he wants to kill the most. He unintentionally starts a meeting with Yamada while reading alone in his favorite school library, and she shows up to sneakily feast on her favorite candies and sweets. Ichikawa learns how much of a ditz Yamada is via their conversations and is forced to cheer her on from the sidelines. Yamada herself can't help but tease Ichikawa nonstop because of his agitated responses. The two's distanced relationship deepens into something more than just a library relationship thanks to a number of endearing regular interactions.