Two male protagonists + power + marriage first, love later
Lin Qingqing (called Qi Yan after time travel) has been protecting him since he was born. Pu Jian (system, virtual state) has been by his side to protect him. On his 18th birthday, Pu Jian finally transformed into a human form. In order to help Lu Chengyou (alias Qingshan, male protagonist), the two of them traveled to Lu Chengyou's country together.
Lu Chengyou (also known as Qingshan) is the eldest son of the former emperor, also known as the eldest prince. He suffered from mania and was regarded as a "madman" by the palace people. The former emperor was naturally partial to Lu Chengzuo, so he gave the position of crown prince to the young prince Lu Chengzuo. Lu Chengyou died in anger and killed an attendant. The former emperor used this as an excuse to demote him to a very poor and backward city (i. E. Mugon City), where Lu Chengyou established himself as king.
What will happen between the two of them?
[I really can't explain clearly, just read the text]
Intention: Do your own thing first