Along with the Character Event Wish banner, the Weapon Event Wish banner frequently offers five-star weapons that may be utilized by the featured character and last for the same period of time. When it comes to weaponry, Mihoyo is a little more forgiving, as you have a 75% chance of getting one of the highlighted five-star weapons on every pull of five stars and a 75% chance of getting one of the featured four-star weapons on every pull of four stars.
Even though these chances are more likely, making a wish on the Character Event Wish banner will also provide you a ton of four-star weapons in addition to finishing your Character Archive. Save your Intertwined Fates for the Character Event Wish banner unless you're going to spend a lot of money or truly want some five-star weaponry.
Like many other gacha games, Genshin Impact has a sophisticated pity system that, in certain situations, alters this probability.