One day, I visited my friend Shiho Sakura's house and accidentally saw her aunt wearing flashy lingerie. Her appearance was almost provocative, swaying her hips seductively as if enticing me. The dirty charm hidden beneath her beautiful, gentle demeanor had already brought my heart to the brink of explosion. A few days later, learning that Shiho was away working part-time, I couldn't resist the urge to see her aunt in lingerie again and found myself heading back to their house. That was my only purpose.