If you wish to know what's in store for you in this life, explore the fifth house in your horoscope! The role of planet in the fifth house in birth chart is significant as it shows the virtues of your past life. The fifth house is ruled by the Sun in the kaalpurush kundli or natural horoscope. Jupiter is the karaka of the fifth house, which indicates fortune, wisdom, prosperity, and other good things in life. Sun in Fifth House