What will happen to the wife when she gets older..? I can foresee the drama..!
Ending Theory: When the wife reaches legal age, father san takes her to a new honey moon and they sleep together again, however, with his old age he dies during the act, everyone was sad... Time skip 10 month later, they had a child... His first words? "I'm...back" and the older daughter says "Oh boi, here we again!!" and then baby san (previously father) says "I guess I really put everything I had that night!" everyone laughs [END]