Since my husband has been away for work, I've been living alone with my son Tetsuya and his friend Osamu. The two boys were always kind and respectful toward me, but one day, Tetsuya suddenly grabbed and sucked on my breasts. I tried to stop him in shock, but overwhelmed by his passionate advances, I ended up letting him do whatever he wanted with my breasts. He even gave me a handjob, leaving me both aroused and filled with regret. To make matters worse, Osamu had been secretly watching the whole time, and when he said, "It's not fair that only big brother gets to have fun," I was thrown into complete confusion.