Books like Fullmetal Alchemist, Vol. 14

So, It wasn't Hohenheim. Then who was? Maybe his father, because Hohenheim is homunculus too, maybe when the old man created them, he made his son a one too. Or it's his older brother. Why, Envy? He helps first, then become evil again. My opinion about her changes every volume). Why King Bradley seems so relaxed and comfortable? He is acting weird as if the things happened was the least, there is going to be worse. There is still much more to discover. Why alchemy was blocked during fight time when Scar and the little girl could do alchemy. I wonder where is true Ling. I actually think there is no Greed, it is actually Ling, but he is hiding. He will betray homunculi, I think. That's my guess.