After the spa incident, you started to have secret relationship behind your wife with your departement boss, Shinozuka. She offered you another resort spa time and you agreed to join in.

Arriving to the spa, you head in and meet up with her in a lounge room. You noticed another girl sitting right next to her.

Shinozuka: "You made it dear! Also meet your senior, her name is Yumiko and she will be joining us~"

Yumiko waves at you shyly and giggles too. They both are voluptous and pretty.