[Reducing Mosaic]HUNTC-246 Living a life where I secretly promised my sister that we would only kiss. 'Only kissing... since we're siblings...' The promise was to only kiss with my grown-up sister, but I couldn't hold back... When I returned home after a long time...

When I returned home after a long time, the one waiting for me was my sister whom I had loved in the past. We used to live like lovers. I struggled with the forbidden love between brother and sister and eventually ran away from it all. On this return visit, I found that my sister, who had grown up and become even more beautiful, and I made a promise of 'just kissing' and kissed for the first time in five years. However, it didn't stop at just kissing; as our kisses became more intense and entwined, I couldn't hold back anymore, and we ended up crossing the final line. Once that happened, there was no stopping us two, and we fell into the quagmire of incest...