Hey man I have some thoughs to share:
First, I think you should give more info and attention for the protagonist internal thoughts and feelings in accepting Ceres, for other than the background in which they grew together and some drinks to start it all they don't have much explanation to keep it going with love and all.
Second, when he shows the peach I think he should say It's a fruit made with shaman techniques or whatever, from his blood which he 'cultivated' to be as good as a immortal titan but with his 'unmatched talent' he also 'cultivated' it in a way he can keep his fertility.(
Blood_Series9