I have a close friend since childhood, her name is Runa Kanda. We have been very close since we were young, and that has not changed until now. She shares everything with me and seeks my opinion on everything. One day when I visited Kanda's house, she was trying on very sexy bikinis to prepare for an upcoming beach trip, asking me which one suited her best. Her curvaceous figure, smooth white skin, and large breasts were a sight to behold, something I had never seen before. I was stunned for a few minutes, then a dark thought suddenly appeared in my mind. I couldn't control myself in front of such an attractive body, and my actions afterwards made me feel very ashamed whenever I thought about it. I forced my close friend and made her have sex with me all day that day.