[HUNTA-579] Batng with my swimsuit-clad little sister!! I couldn't resist getting an erection from the growth I didn't notice in my sister. I thought I wasn't interested in my cldish sister at home, but one day she barged into the bath! She came wearing a swimsuit and said she wanted me to wash her back! She doesn't usually say tngs like that... Apparently, it's because of her friends...

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My sister suddenly entered the bathroom wearing a swimsuit, saying she wanted to wash my back. She seemed to be trying to get a new summer swimsuit, but whether intentionally or by accident, she kept pressing against me while washing. Though I usually think of her as childish, her appearance in the swimsuit made me feel flustered. I tried to stay calm, but my body reacted involuntarily. My sister noticed and kept glancing over, eventually reaching out...