I had feelings for Mikako, my friend's younger sister. She was incredibly pure-hearted, the kind of person who never suspected anyone. Due to our age difference, it was hard to get close to her directly, so I decided on another approach. I obtained an aphrodisiac drug from a dark web site, planning to make Mikako mine. After confirming my friend wasn't home, I headed to her house. When I rang the doorbell, Mikako was alone. Without any suspicion, she let me inside. I gave her drugged candy, and soon her body began to react—her breathing grew heavy, her skin burned with heat, and her sensitive areas started throbbing with desire. Pretending to care for her, I touched her body and stimulated her most sensitive spots. Gradually, she began craving more, responding with unexpectedly mature, lustful reactions...