King of Lanka: Vibhishana

Explanation:
After the defeat of the mighty demon king Ravana by Lord Rama in the epic Ramayana, the question arises as to who should be the rightful ruler of Lanka. Ravana's brother Vibhishana, who had supported Lord Rama in the war against Ravana, is crowned as the king of Lanka with the blessings of Rama and the sages.

Here is a detailed explanation of how Vibhishana became the king of Lanka:

1. Vibhishana's Loyalty:
Vibhishana, unlike his brother Ravana, was a wise and virtuous person. He recognized the divinity of Lord Rama and realized that supporting him would lead to righteousness and the welfare of all beings. Vibhishana chose to leave his brother's side and seek refuge with Lord Rama, as he believed in the righteousness of Rama's cause.

2. Assistance to Lord Rama:
Vibhishana played a crucial role in helping Lord Rama in his quest to rescue his wife Sita from Ravana's captivity. He provided valuable information about Ravana's army, the layout of Lanka, and the weaknesses of Ravana's defenses. Vibhishana's assistance proved to be instrumental in Lord Rama's victory over Ravana.

3. Surrender and Redemption:
After the death of Ravana, Vibhishana approached Lord Rama and sought forgiveness for his brother's misdeeds. He expressed his desire to atone for the sins committed by Ravana and his associates. Lord Rama, being the embodiment of compassion and forgiveness, accepted Vibhishana's surrender and blessed him.

4. Coronation as the King:
Impressed by Vibhishana's loyalty, wisdom, and righteousness, Lord Rama bestowed his blessings upon him. The sages and divine beings also recognized Vibhishana's virtues and supported his claim to the throne of Lanka. With the blessings of Rama and the sages, Vibhishana was crowned as the king of Lanka.

Conclusion:
Vibhishana's loyalty, assistance to Lord Rama, surrender, and desire for redemption earned him the blessings of Rama and the sages, ultimately leading to his coronation as the king of Lanka. His reign brought about a period of righteousness and prosperity in Lanka, marking a significant turning point in the epic Ramayana.