An older brother gets excited watching his younger sister masturbate and says, "Just let me touch your breasts." His sister can't say no and accepts, but the older brother's desires escalate from handjobs to blowjobs and then penetration. This is an incestuous story of a brother and sister who know it's wrong but get addicted to pleasure and desire each other's bodies. *This work is a sequel to "A life that is just short of incest with a younger sister who lets me insert the tip 3cm into her" This is an excerpt from " Mitsuki Nagisa" (product number: dvaj00402).