Sunghoon and Sarang visit Mt. Fuji, but Sarang isn't interested at all. Later Sunghoon prepares a surprise party for Shiho. Tablo and Haru visit Haru's grandpa's grave. She writes a card to him. On the morning of Hyejung's return, Haru surprises her dad with the song she wrote. The twins are growing really fast, they even try walking with the walker. Hwijae takes them to a swimming pool for babies to swim. Hyunsung tries making bean sprout rice but Junseo seems to know how he should make it. Junu expresses how he feels, he thinks his mom favors Junseo since he's younger. Guest stars: Jeong Jun-ha via phone call