Teacher, This Time We're the Same Age

Baizi has arrived. The secret society says nothing of its words, its origins, or its way back. Zhou Yu was her teacher in another world. Now they are the same age, in the same class, and sit at the same desk. One calls him cousin, and he answers. Three years: the cafeteria, the farm, the sandpit, dawn and dusk. The teacher becomes cousin, cousin becomes Zhou Yu, and Zhou Yu becomes Baizi's Zhou Yu. No one spells it out, and no one needs to. Anyone can be a teacher, but there is only one Zhou Yu. Just grow up well. That's all.