VEC-554 Mother's best friend.

My mother's best friend, Miyuki, took care of her mother's best friend in her place, thought she was her best friend, or whatever, but in front of her, who had nothing to look forward to, there was a big titty girl who was going to start living alone with Miyuki for a while, so it was hard to think, so she went into the bathroom and used her underpants as a small dish, but she was unlucky...