A Love Hate Chord

the two female students from seohwa school of arts piano department, choi in-jeong and seon kyung-hwa, fiercely compete with each other. their rivalry, which began in middle school, has persistently continued. recently, in their senior year, choi in-jeong, who had always been narrowly behind in piano skill, caught up closely with kyung-hwa, who began to feel a sense of crisis… in-jeong's obsession with kyung-hwa, and kyung-hwa's anxiety towards in-jeong. what could be the reason behind this?