Book Transmigration: The Heroine Reads My Diary, and Her Whole Persona Crumbles

Su Che unexpectedly found himself in a world written in a novel, where he became a major villain destined to be the protagonist's stepping stone. Luckily, he awakened a Diary System: all he had to do was write in his diary to grow stronger. Breakthroughs in cultivation, peerless alchemy, a Sacred Human Physique... He was showered with all kinds of rewards. So Su Che wrote whatever came to mind, never realizing that the heroines could secretly read his diary too. So... Su Che likes me, but he's just pretending? He doesn't love me at all, and he secretly mocks me for being a lovesick fool. He even says there's something wrong with my head! After reading the diary, the heroine's world came crashing down. Turns out she was the real fool all along!