Game demo, Papa no Iu Koto o Kikinasai!

Yuuta Segawa, a first-year university student, had been raised by his older sister Yuri until she married and he moved out on his own. When Yuri asks him to watch over her three children—Sora, Miu, and Hina—while she and her husband take a trip, Yuuta agrees. Tragedy strikes when their plane goes missing during the journey. Determined to keep the sisters together, Yuuta welcomes them into his modest dorm room, beginning an unexpected chapter of daily life with three young girls who now depend on him.