From the Start, I Was Gifted a Divine Maiden, and I Carry a Senior's Skull Everywhere

[High martial arts + System + lighthearted + absurd + plot-driven + no saintly hero + single heroine + gradual growth toward invincibility] The Heavenly Dao sends a life-size figurine, and the school janitor makes an announcement over the campus PA. A human skull suddenly appears in the fridge of my rented apartment, claiming to be my senior? A mysterious voice whispers in the dead of night. Don't answer, don't answer! The unripe fruit will one day ripen. Dare to spill your hot blood on the battlefield! “Guarding the lights of countless homes with a sword, I trade one family's reunion for the reunion of thousands!”