SPRD-685 - A trip with my Osaka mom, and the taboo of that night

My Osaka-born mom raised me alone after dad passed away. I took her on a trip with my first paycheck as a gesture of gratitude. But in reality, we've shared a taboo, intimate bond that goes way beyond mother and son. In the unfamiliar atmosphere of the trip, our suppressed desires finally explode, leading to an intense and steamy encounter. Where will this journey end?