After my father remarried, the stepmother who lives with us is surprisingly close to my age. With mixed feelings, we share a kotatsu with the family, skin touching skin. It's too much to call her 'mother'; I lust after her body and get an erection! She feels the same way, so we secretly fool around under the kotatsu. Eventually, the two of us can't hold back any longer, right there with my father nearby…
