The relationship can be developed through trust. For example, when Gohan is in his Oozaru form, Videl can show that she trusts him not to harm her. This can be a start to a deeper connection.
According to the legends of mortals, the true form of the Endless Sky Sacred Beast was the Rat King of the Spiritual Realm's Grotto-heaven. It was one of the seven demon kings of the demon race. Due to certain events, it had descended to the lower realm as a backup plan. The Endless Sky Beast's clone had lost its intelligence after descending to the Lower Realm, so Han Li kept it in the Heavenvoid Cauldron and slowly gained its intelligence. It had once taught Han Li some knowledge of the Spirit Realm, and was known as the Endless Sky Professor after Monarch Soul Divergence. However, the search results didn't provide the exact identity of the Endless Sky Beast's original body, so it was impossible to determine who the actual body was.
Definitely not. This kind of so - called 'fiction' goes against the basic principles of human - centered values. We should focus on literature that reflects real human emotions, relationships, and positive life experiences, not something with abnormal and inappropriate themes like this.
Gohan could become more of a leader. With the power of Super Saiyan 5, he would be one of the most powerful beings in the universe. Other Z - fighters might look to him for guidance and leadership. This could bring out a more assertive side of his personality. He would need to step up and make tough decisions for the greater good, which would shape his personality in a more authoritative way.