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Cuckolding Mother: I Can't Forget My Daughter's Boyfriend (Separate Edition)

Minako is a single mother raising her only daughter, Risa, while working for an insurance company.
Risa has a childhood friend named Naoya who lives in the house next door, and Minako has been feeling uneasy about the romantic atmosphere between the two of them lately.
When Risa's school has a test period, Minako goes home early to have lunch with her and witnesses Risa giving Naoya a blowjob.
The next day, Minako talks to Naoya about how she wants what happened yesterday to happen when she is a little more mature, but then she is offered an exchange: instead of refusing Risa, he wants Minako to do her sex work in her place......