The Villain BOSS Adopted My Grass Spirit Form

Waking up after a thousand years, I discovered I was no longer human, but a weak, clumsy infant, after spending centuries as a blade of grass. Even worse, I’m stuck in a demon lord’s lair, terrified of the infamous, powerful Villain BOSS! But this Demon Lord, Yu Shu, isn't chasing the heroine of the original novel. He's got his eyes on me. He instantly provides a home, offers cultivation, and crushes anyone who dares to touch his \"pet.\" My instincts scream 'run,' yet I can't shake the terrifying suspicion: Is this villain truly trying to protect me, or am I just his new, peculiar toy in a world about to plunge into an apocalyptic war?