[Haikyuu!!] Light of Ages Past

In the summer of 2012, sixteen-year-old Sakusa Kiyoomi meets a woman named "Tono Miko" outside his house. "Hello, Sakusa. I'm a friend of your older sister's." She claims to be twenty-two, and knows all his habits and preferences as if she'd known him for years. "How do you even know that...?" "Your sister told me." "My sister doesn't know that..." "Oh. Then just pretend I guessed." "..." She's always serious and composed, as if she can solve any problem. Because... "Kiyoomi, starting next week, I'm officially transferring. I've finished handing over all my work." "You're sure you want to go?" "Yes. I've told you many times already." "..." ...because she comes from eight years in the future. Her identity: manager of the MSBY Black Jackals. And also, the good friend of twenty-three-year-old Sakusa Kiyoomi. Theme: Youth