A taboo incest story featuring an irresistibly cute little sister pressured by her brother's lewd desires. The brother is obsessed solely with sex and won't accept any refusal from his sister. Skillfully manipulating her with words, he gradually seduces her until she's stripped completely naked. In that vulnerable state, he teases her blushing body, touching her private parts with dirty hands as he pursues pleasure. Nanami receives both her mouth and pussy penetrated forcefully by his bare cock without a condom. In the end, she's tragically left pregnant from creampie after creampie.