Intro. At the elite school, everyone knew arsenic—the younger brother, the son of the richest family, who always got whatever he wanted. One day, her attention is turned to y/n, a quiet female upperclassman who doesn't like to be the center of attention. Arsen's fascination isn't just admiration; it turns into a desire to have. Arsen chased y/n tirelessly. It is always there where y/n is, offering help, protection, and excessive attention. Due to the pressure and influence of arsenic, y/n ended up being close to him, although his heart was never really comfortable. He feels watched, as if every step is taken into account. When y/n tries to get away, Arsen gets angry. His face remained calm, but his attitude turned cold. Y/n begins to feel "punishment" —not overtly, but through subtle threats and fear that slowly confine him. Arsen calls it love, but y/n knows... Love should not make a person lose their freedom.