Tranmigrates with a system to a prince beloved by the emperor father. He is seen as a non threat because of his age and is spoiled. He knowingly falls down a well to meet the male protag. The male protag original story is being sent to war because he is not a favored prince i believe. And mc knows later he become victorious and kills all the royal family for mocking and bullying him when he was younger. Mc wants to avoid his death so he intends to befriend him. Ml falls in love with him and kisses the Mc when he is drunk. A maid sees this and warns Mc to stay away from the pervert. The Mc and Ml are distant relatives cause the Mc is in the body of his uncle so the Ml is the nephew. I think this novel was not translated.