I was caught by my childhood friend, Kang Geon-woo, with a dildo I received as a useless birthday gift. “Hey. Have you ever used it?” “……What?” “Forget it. What would you even know about that anyway……” The embarrassment was brief, but a sharp sense of defiance quickly filled the gap. There were only two things I hated about what Geon-woo said. (1) “Forget it. Never mind.” (2) “Kids should stay out of this.” But today, he combined both (1) and (2). Past experiences turned into a deep sense of sorrow from being ignored. Just because he was born a month earlier! “I can do something with that too!” “Then, will you teach me? How you play by yourself.” Lured by the idea of ‘teaching’ something to Geon-woo, Aro ended up digging her own grave.