Two male protagonists fall in love with master and apprentice.
The yandere master who is both evil and evil x silly and sweet and squeamish
Thousands of years ago, there was a battle between immortals and demons, and the demon Lord Shen Weixun was defeated and disappeared.
Jiang Qinghan, the subordinate of the Demon Lord, searched hard for Shen Weixun's whereabouts but failed to develop a hatred for Kunlun Mountain, the largest sect in the immortal world.
However, Demon Lord Shen WeiXun lost his memory and wandered into the mortal world. An encounter left him beyond redemption...
You can't rate yourself too high [makes a face]