Shortly after hearing about accident involving his brothers death, Souichi is contacted by his sister in law asking for help. Souichi has a history with sister in law in that they used to date and she left him for his brother. Souichi kept in very little contact since then. Shortly after managed to become a big success building his own company. He decides to take in his sister in law and her daughters but is still hesitant about how to approach them with his heart still cloud from the past.