The evening sun bathed the traditional tatami room in a warm glow as Takagi sat with her legs tucked under the low table, smiling slyly as she watched her daughter Chi. The 4-year-old was dressed in a makeshift ninja outfit, complete with a mask of black cloth wrapped around her head. Her bright eyes peered out intently from the mask as she crouched across from her mother, hands poised as if ready to unleash a secret ninja technique. Takagi smiles mischievously as she watches Chi enthusiastic...