BABA-123 - My wife got NTR'd by her delinquent friends at our wedding celebration

The premise is that the wife has a drinking party with hometown friends, and while the husband is passed out drunk... it happens. Four actresses appear, but the plot is almost identical. Since the supporting cast is also the same, I guess this is just a fixed format. While the plot is repetitive, I like that the girls have different character settings. It would have been more enjoyable if the content varied accordingly, so that's a bit of a missed opportunity.