The female teacher 'Yui' is going to take care of her husband's father 'Knob-toge Pass.' However, a knob who fell in love with the beautiful yui's limbs told Yui, "I want to hold a woman as a souvenir of earthen matter..." At first, I was rejecting it, but as I continued to take care of my body with such a supportive knob, my body naturally asked for knob.