Nogi Mashiro is a quite ordinary girl. Nishina Akami, a girl friend of hers, often gets involved with that Mashiro. For some reason, Akami starts up various approaches, however. Each and every one of them is very interesting to Mashiro. The moment she wonders what would happen if she tried it herself. Without hesitation, she does it. …… And, well, that Shiro-chan, who immediately acts according to her curiosity like that, is the one I love.