I was a aunt but I was molested...

I lost my husband before my son Kenji could remember, so I have been raising him on my own. One day, when Kenji finally graduated from university and started working as a fine working adult, his son contacted me and asked me to bring glasses to work. Just as I hurried onto the bus, I was hit by the feeling of my hands hitting my butt. I told myself that it was a misunderstanding, but the act gradually escalated... Since then, my forgotten sexual desire has begun to rage in the opposite direction of my will...