Yui-chan and I were good friends who shared indoor hobbies. I thought sex was something only extroverts had to do with each other, but when she told me she wanted to lose her virginity as soon as possible, we suddenly decided to have sex... It was the first time I'd seen Yui-chan naked. She usually wears plain clothes, so I'd never noticed she had such an amazing body, even though we were always together. Also, I'd never thought sex was anything special, but it felt so good I couldn't stop moving my hips. Seeking pleasure, we devoured each other in a raw sexual act. After all, sex between two introverts is the sexiest.