[Hayake] What Kind of Weirdo Onii-chan Gets Excited From Seeing His Little Sister Naked? [Mistvern + Shippoyasha]

When parents are away, the boundaries between siblings begin to blur. Misaki, a seemingly blunt and insensitive 6th grader, turns the summer heat into a provocative game of seduction against her brother. As she sheds her summer attire, the tension builds between her cool demeanor and her unexpected advances, leaving him struggling to keep up with her relentless and hungry desires.