Sae was surprised to see a small child knocking on the door of his mansion and carrying a letter, Sae opened the letter, this was from his ex-girlfriend. Sae was reminded again that the child was Sae's child "now it's your turn to take care of this child." the letter was written like that, Sae sighed even though he had left this child for years but Sae had to be responsible as a man...