Sun in 5th house.

So, lets see what Sun can do in 5th house without any conjunction or aspect from any other planet. 1st lets see what these 2 things represent -

Sun represents King, Government, Father, Authority, Career, Top Positions, Ego, Self Esteem etc.

5th house represents Creativity, Happiness, Children, Innovation, Sports, Movies, Stock Trading, Gambling and Betting, Education, Ancient Texts etc.

As 5th house is natural house of Leo, the 5th sign, and as Sun rules Leo, Sun actually likes the environment of 5th house. 

They are the natural celebrities. They want to get the status of celebrity or at least people should treat them like celebrities even if they are not. 

They are very proud of their interests, hobbies & creative pursuits and everything they achieve through it. Actually, their creative pursuits are the biggest ego satisfaction and source of confidence for them. . 

But as I said if Sun illuminates things then it can also burn things related to that house. This position can cause scenario where people may face difficulties in having children or they can have ego conflicts with their children in later life. As it is also house of Romance, they can have ego issues with their love interests too which may even end the relation.

Hope it helps.

Thanks,

Swami Premanand Bharti