My junior idol Kasane, who always greets me with a bright smile, even when I'm feeling down. Every time I see her innocent, budding breasts, I feel a desire to possess them. At her first solo photoshoot, I start touching her nipples, telling her it's something everyone does, even though she's clueless. Her development intensifies as we escalate things. The girl who dreamed of becoming an idol is forced to learn nipple play.