Hi, this is why I avoided going Cece's way first, but did it last. I don't think it's fair to feel ridiculous because this story is heavily loaded with emotions, sad and happy. I'm not a particularly emotionally sensitive guy, and I'm not ashamed to say it, I cried like a child.
Drifty gave us a story, a slice of his life that he was able to transcend, ultimately leaving us a positive message, and that's not only courageous of him - talking about this kind of drama can be real torture - but also a gift that is good for the soul and the heart.
Regarding your question about Cece's illness, only Drifty could answer. Having had a similar experience with my little sister, whom did not have the chance to be diagnosed or treated, I will simply say that it is not possible to give a name, as the causes can be different and even multiple. Illness or weakness of an organ, blood deficiencies, mental fragility, emotional hypersensitivity, from birth or due to shock, trauma... So many causes, known and unknown. My little sister “suffered” from strong cognitive dissonance at the start. This made her emotionally hypersensitive and led her into abysmal depressive states.
Otherwise, through this VN, Drifty gives us a very beautiful life lesson, and all the paths of the game are in some way a metaphor for the choices we make in our lives. We cannot live by allowing ourselves to be overwhelmed by sorrow.
For the dead, we can do nothing, but for the living, those around us and whom we love, the paths just ask to be explored.