Yui-chan and I were good friends who shared indoor hobbies. I thought that sex was something only for outgoing people, but... She said she wanted to lose her virginity as soon as possible, so we decided to have sex on the spot... It was my first time seeing Yui naked. She usually wears plain clothes, so I never noticed that she had such an amazing body, even though we were always together. I also thought that sex was no big deal, but it felt so good that I couldn't stop moving my hips. It was a raw sexual act, where we devoured each other, seeking pleasure. After all, sex between two introverts is the sexiest.