Yuri comes close to her big brother, sparkling with a smile as she says, "Big brother, let's make a baby together!" and hugs him tightly. She's obsessed with wanting a baby, but has no idea how to actually make one. That's why she has no choice but to have her older brother teach her step by step, hands-on. A special sex education unfolds between brother and sister, woven from pure love and passion. A warm, heartfelt story begins now!