True to the name of the movie "Old Buffalo and Young Grass", the old man is over 50 years old but his health is extremely good, especially his golden bird, this is the dream of many men when they are old. Todaku is old and weak and lives alone with no one to take care of him, he decided to call the home care center, asking a company employee to take care of him, he was surprised and happy to see that the person who is about to live with him is a beautiful and gentle girl in her twenties, of course there must be a reason why he is so happy.