
Grandpa was a Celestial God back in the day and the dumb Big Bro Dragon stumble upon him during his heat which made him rape Grandpa. He forget that moment because of the heat daze(Dragon took over his consciousness). So, Grandpa harbour hatred and wanting to kill Dumb Dragon. Meanwhile, the Black Dragon seme and uke Dragon fall in love in the same time frame Grandpa get raped but their soul get banished for falling in love(Forbidden love between Evil Dragon and Royal/God Dragon). And as for baby dragon theory. Uke either tranform into baby after die or reborn to the same family. Thus, making dumb Big Bro to pray for his brother not to get his power back to protect him from the same fate(Falling in love and die).
Wouldn't it nice of translator mention who able to guess the correct answer for the questions.