Himeka is a 21-year-old girl obsessed with vibrators. She first encountered a vibrator at age 16, when she accidentally placed her grandfather's massage device on her groin. In that instant, she was overwhelmed by shocking pleasure, her consciousness drifting away. When she came to, nearly an hour had passed. Since then, she developed a strong dependency on vibrators and would masturbate every time her parents were away. Just waiting for them to leave the house would naturally make her wet. Through these experiences, her libido grew stronger, eventually sparking curiosity about sex. Although she had no boyfriend at the time, she frequently received confessions. She made a decision: she would start dating and have sex with the next person who confessed. About a month later, a guy from another class confessed, and her wish came true. Honestly, she had no interest in him, but she agreed solely to experience sex. Her first time was disappointing—nowhere near the pleasure she felt with the vibrator. The relationship soon ended. After that, she felt disillusioned with sex, but after graduating high school, she met a boyfriend who loved using sex toys. From then on, she became even more obsessed with toy play, constantly seeking new thrills.