[Reducing Mosaic]JUL-969 During a family trip to the hot springs... I, a 'virgin,' was seduced by my ≪sister-in-law in her bored phase≫ and indulged in morning-until-night bareback sex. Nao KŌMIYAJI

I came to a hot spring trip in the suburbs with my brother and his wife, and my mother...and for some reason, me. My sister-in-law Nao prepared tickets for two pairs, so I was roped into joining to make up the numbers. The inn was more luxurious than expected, and my excited mother and brother passed out from drinking alcohol early on. In the silence of the family sleeping, the beautiful and kind sister-in-law and I were alone... Her skin, flushed from the bath, peeked out from her yukata, and I couldn't take my eyes off it. Noticing my gaze perhaps, Nao-san approached me...