We love you Daddy

What happens when a mere 14 years old boy suddenly becomes a dad to a pair of 4 years old twins.
Ein, an orphan living with Haruko which is just like a sister to her, as they've spend their childhood in the same orphanage becomes the dad of Haru and Maru as he discovers on Haruko's death that he is registered as the Dad of the boys as what was written on Haruko's will.
Already in despair due to Haruko's death now Ein has to raise the two kids which is now his only family and he will do everything to keep his family with him.