The Heavenly Dao: Mysterious Heavenly Tribulation

[Mortal's journey + no System + one heroine] Fast-paced plot, plain language, no mindless decisions, intelligent characters all around, and a bit irreverent.

Only after his older sister dies, his master is captured, and his sect abandons him does he gradually grow stronger. He slays divine sons, abducts divine maidens, and destroys sects.