HZGD-112 Yu Kawakami, one resident son, pre-sexual intercourse wife and play

Yuu is a stepmother who can’t fill the delicate sense of distance between her remarried husband’s stepchildren. One day, a bad-looking man suddenly rushes in and tells him that his son has run away from an old woman on a bicycle. A large amount of money is required, and if you do not have enough money, you will be able to commit it almost every day from that day. What was the action taken by the son who saw the situation?