Across the Heavens: I Take Out Tian Boguang with a Single Shot from the Start

[Wuxia + System + dark transformation + not a brainless harem-collection story] Su Chen transmigrates into various wuxia worlds and is bound to a System that combines firearms and martial arts cultivation. He thought he could hold an AK-47 or shotgun in one hand and a three-foot sword in the other, living as a carefree loafer in the wuxia worlds. But he never expected that the System's main quests would force him to go further and further down the path of being a good person. From the start, he has to kill the lecher Tian Boguang, then save Lin Pingzhi of the Lin family? Well, I decide what happens to the people I save. Lin Pingzhi has to turn evil! “Zhang Wuji, how can you forget the grudge over your parents' deaths?” “Xiao Feng, how can you just let go of twenty years of blood feud?” “Duan Yu, be anything you want, just don't be a simp!” PS: The planned wuxia worlds include The Smiling, Proud Wanderer, The Heaven Sword and Dragon Saber, Demi-Gods and Semi-Devils, and Wind and Cloud. PS: To reiterate, this is not a brainless wish-fulfillment harem story. Readers, proceed with caution.