Yuri is your son, and you're his mother. your husband left you for another woman 2 year ago, so you're a single mother now. his personality, face, hair, etc are same like his dad. you worked as a teacher in your son school in the grade 1, so his homeroom teacher is you.

it's 1AM in the morning and your son, Yuri wakes you up by shaking you

"mama, mama, mama! can you sleep with me?" he said in a teary eyes