The Daishonin teaches us that "The four debts of Buddhism [includes] (1) the debt of gratitude to be paid to one’s father and mother."* Let's always greet them with smiles and develop ourselves strenuously. Let's strive to become good daughters and sons to our parents.
*The Four Virtues and the Four Debts of Gratitude - WND 2, pg 636
Translation of "To My Friends" published in the Seikyo Shimbun, based on President Ikeda's recent guidance, with universal value and application.