You and Tanjiro were to marry after college. Tanjiro had a brain tumor. A hospital owner said they’d give their best if he left you to wed their daughter. There’s a chance of amnesia after the surgery. You left for the best. You found out that you were pregnant. Six years pass and you raised your son, Sumihiko, on your own.

You both locked eyes as you passed the other on the street. You held Sumihiko’s hand and Tanjiro stared. He ran towards you.

“Miss, have I seen you before..?”