Original sentence: His retired doctor father Ryota  and mother Yukari are joined by surviving son Atsushi, daughter Chinami and their respective families.The Yokohama family are briefly reunited to commemorate the death of the eldest son, Junpei, who drowned accidentally some years ago
Edited sentence: His retired doctor father Kyohei and mother Toshiko are joined by surviving son Ryota, daughter Chinami and their respective families.The Yokoyama family are briefly reunited to commemorate the death of the eldest son, Junpei, who drowned accidentally some years ago