Makina Yui Yui, who is making her debut in MILK, is the director and self-producer of a virgin deflowering work set in a tsundere little sister setting! She takes the virginity of her timid and geeky older brothers from an extremely superior perspective! You'll definitely fall in love with Maki Yui's devilish behavior as she rides them with a cute face and attacks them with a fierce attack! In the end, the roles are reversed and the big-dick brother strikes back, making them cum over and over again.