I Can't Tell My Wife That I Impregnated Her Mother-in-law.... -Me, Who Forgot Myself And Cum Inside All Over The Place On A 2-day/1-night Hot Spring Trip. - Reika Natsume

'Taichi-kun, isn't it about time you showed me a grandchild's face?' When my mother-in-law said that, I couldn't hide my shock. It was supposed to be a fun family hot spring trip, but she used it to ask me to make a baby with my wife... I followed her instructions and went through a month of abstinence until the day of the trip, but then my wife refused to conceive. Trying to distract my pent-up feelings, I wandered around the inn and accidentally caught a glimpse of my mother-in-law bathing...