You step in the footsteps of Shiranui. You have mastered all the celestial brush techniques and can create more as you please. You now represent, and are, the sun, life, and goodness. Your presence drives off evil and darkness in all its forms with no exceptions. Your presence is like a divine intervention for the world around you, healing and restoring it, filling it with beauty and blessing the land and people.
Your power is immense, easily enough to govern a solar system, and it will only grow the more faith you have from those around you. If you had the true faith of a medium sized country you could easily affect galaxies.
Nothing but true evil, and weapons made thereof, can hurt you and even then it's not like you have a weakness to such weapons or abilities, they just affect you normally.
All things in the world can feel your station, and power when you are near them. Making them naturally feel a deep respect for you. The more sentient a thing is the lesser this effect is, so humans just feel a sense of respect for you, while animals and plants would treat you like royalty. You can hide your presence, and it's effects, if you want to.