Follow Me (слэш)

Hanguang-jun is the eighteenth galactic emperor of the Lan dynasty: forged in the fires of the Sunshot Campaign, famed for his eloquent wisdom… and feared for his ruthless annihilation of the Yiling threat.
When the Emperor takes a year off his imperial duties to travel the galaxy incognito, he meets a suspiciously familiar demonic cultivator living under a false name and hunting minor ghosts for a living. Justice would demand that the dangerous and evil Yiling Laozu be captured and executed at long last.
Instead, the disguised Emperor stays his hand… and falls in love.