[Every year since then, you and she have come to Yoshida-cho and Sora-no-ike together. In the early years, you drove Moko to the lake, but in recent years, it has become Moko who drives you.]
[The girl has grown up and graduated from the medical school of Misaki University. She is a smart child and was admitted to Misaki University entirely through her own efforts. You wanted her to inherit your legacy, but after a brief attempt, she did not choose your path.]
[She made biology, which she originally studied as a minor, her main field and became a doctor of biology.]
[After finishing her studies, she entered a biology research institute and became very busy, returning home very late at night. You urged her to find a partner, but she said she had devoted all her heart and soul to her career.]
[When you were 66 years old, Mozi had already gained some fame in the biological community. She switched to another research institute and became even busier. However, she always took time out to accompany you and take care of you.]
[You don't pay much attention to your daughter's career, and you still concentrate on your surgery. You further improved it and solved some minor problems. This is just patching up the original foundation, and the added effect is limited.]
[You are sure that there is no possibility of major improvement in the surgery itself, and even minor improvements are difficult.]
[You have entered old age. In the operating room, you are only responsible for the most important part, and the rest is left to the young people you lead. You no longer have the energy to complete a whole operation. ]
[At the age of 70, you retired from the operating room. Over the years, you have trained five apprentices who can perform your surgeries skillfully. You hope that they, who are now working in various places, can bring new improvements to your surgeries.]
[You were disappointed. These five disciples were just faithfully copying your surgery. No one could improve it. When the five disciples wished you a happy birthday, you reprimanded them for not making progress. They bitterly told you that your surgery was already perfect and their modifications would only make it less perfect.]
[You put the focus on teaching. You opened a training course to help doctors in major hospitals around the world master your surgery. You hope to gather wisdom from all sides.]
[By the age of 80, your efforts have yielded no results.]
[On the day of the first snowfall in Yoshida Town, you and Moko sat in the car not far from the grave, looking at the gravestones and the pond in the snow. You are old, and Moko is also at the end of middle age. You can no longer stay under the snow as recklessly as you did in the past, and can only hide in the car to avoid the cold.]
[You and Mozi were drinking in the car. You were very depressed. Your energy and health were not as good as before. Even in the surgical teaching, you began to feel exhausted. You were at the end of your life, and you could not find a safe treatment method.]
[You were trying to hide your frustration, but Mozi, who knew you well, easily saw through your disguise. She talked about her childhood, and the nervousness and excitement she felt when you adopted her.]
[You are handsome and kind. When you arrived at the orphanage, all the children fell in love with you and wanted to be your daughter. She was one of them.]
[After being chosen by you, she was excited about the realization of her dream, but also worried about whether she could be a good daughter. At the same time, her curious imagination born from reading some horror stories made her doubt whether you were a good father.]
[Your attention shifted to her words, and you smiled and asked her if she felt that you were a good father now.]
[She told you that when she moved into that high-end residence, transferred to that aristocratic school, and used so many luxurious things, she was shocked, but she did not feel happy because of these things. On the contrary, these things gave her a headache and made her very cautious, fearing that she would break something, or lack of etiquette, or do something wrong.]
[What makes her happy and makes her feel happy is your easy-going, your gentleness, and your closeness. ]
[She tells you that you are the best father and the one she loves the most. ]
[Her sincere words touched you, and you told her that she was also your best daughter and your most beloved family member besides Reina.]
[This snow watching and this conversation did not leave a deep impression on you, nor did it heal you or bring you redemption. You are still obsessed with your surgery.]
[On the contrary, Mozi, for some reason, worked even harder. You often didn't see her once a month. For several years in a row, in November, only during the first few days of snow, would Mozi go to Yoshida-cho to accompany you, unlike before when she would stay for half a month at a time.]
[On your 86th birthday, you realize that you don’t have much time left. You were busy with surgeries in your youth, in your middle age, and in your old age. You didn’t take good care of your body, and you were depressed. It’s not easy for you to live to this day.]
[One of your disciples finally succeeded in improving your surgery, but this improvement is just a drop in the bucket.]
[The hospital environment made you feel at ease, you were comforted, and you felt close to your wife. In the last moments of her life, she was lying on the hospital bed like you, with medicine dripping into her veins with no end in sight.]
[Think about it, you said goodbye to your wife when you were 19, your father when you were 73, and your mother when you were 77. Now, it's your turn.]
[During your hospital stay, Mozi rarely came over, and even when she did, she only stayed for a short while. Her research seemed to have reached a critical moment, and you understood her enthusiasm. If you could make a breakthrough, you would be more focused than she was.]
[At the age of 87, when you were on the verge of death, Mozi came to your hospital room and brought something.]
[She takes out the thing soaked in the potion and puts it in your palm.]
[You trembled. Even though you hadn’t touched a scalpel for a long time, hadn’t opened someone’s chest, and hadn’t touched the heart you had been obsessed with for your entire life, the moment you touched that thing, you knew that it was heart tissue.]
[Mozi tells you that this is a heart valve made with biology. This is the result of her research, the direction of her lifelong efforts, and a mature application of decellularization regeneration technology, which eliminates a series of defects of previous biological valves! ]
[This is an earthquake, a squeeze between plates. The mountain of medicine has risen because of this crustal movement, becoming taller, more majestic, and closer to the blue sky! ]
[Your body, which was rapidly weakened by despair, quickly regained its vitality due to the injection of hope.]
[You and Mozi used all your connections to quickly facilitate an operation. The surgical plan was formulated by you, and the surgeon was performed by your most proud disciple.]
[The operation was successful.]
[You are ecstatic. You are already in your 80s, but you plunge into the field of biology with great passion. You have a medical foundation, Mozi's teachings, and you only remember but not understand. It took you three years to successfully learn the technology developed by your daughter.]
[Mozi has always been by your side. Seeing your excited expression after your success, she smiled.]
[At this time, you thought of something, and you asked Mozi whether she chose to research this technology because of coincidence or because of you.]
[Mozi answered you, half because of coincidence, and half because I was thinking about your surgery. ]
[This is a lie.]
[As early as when she was still a girl, Mozi realized that her father worked hard to cure her mother's illness, even though her mother had passed away. The first half of her father's life was about love with her mother, and the second half of his life was about defeating the disease that took her mother's life. Her father dedicated his entire life to her mother, and even adopted her to fulfill her mother's wish before she died.]
[She wanted to help you, so she entered medical school, but she soon found that you had already reached the top of the existing medical foundation, and it was difficult for her to keep up with you, let alone lead your surgery to a new peak, so she decisively gave up medicine and devoted herself to biology.]
[Although the mother, whom you have never met, has gained some understanding and affection from your story, the impact of these emotions on her is very subtle.]
[Your whole life revolves around Reina, and her whole life revolves around you. ]
[You finally untied the knot in your heart and enjoyed your old age peacefully, with Mozi by your side. ]
[At the age of 97, you passed away in your sleep. Mozi buried you on the hill next to the Sora Pond, next to your mother's grave. When the Sora Pond first snowed that year, she sat in the middle of your graves and watched.]
[Simulation ends]
I accidentally started late, and I was a bit slow in writing the ending. I am very sorry!
(End of this chapter)