My Childhood Friend Is Cold by Day and Clingy by Night

The male lead suffers, childhood sweethearts, his love is a painful secret he cannot confess, an oblivious heroine, ensemble cast

The male lead keeps his love repressed and has a split personality

The male lead loves the heroine more, from beginning to end

Theme: Even when love is controlled, it can still break through the fourth wall

Xie Yan had loved Shang Shixu since childhood, but she was already engaged to Xiao Yuheng, young master of the Yaoguang Sect.

When he was sixteen, he developed a strange illness: whenever he came into contact with Shang Shixu, his whole body was wracked with pain.

A love repressed for so long with no outlet only became more tormenting. At nineteen, Xie Yan was officially diagnosed with dissociative identity disorder: one personality was cool and noble, like the moon in the sky; the other dark and obsessive, like dust on the ground.

Later, Shang Shixu returned the hairpin he had given her, driving it straight into his heart.

Three years later, Xie Yan had become the leader of the Demon Cult. He held Shang Shixu tight in his arms, his eyes bloodshot. “From now on, whenever anyone speaks of Shang Shixu, they must mention me, Xie Yan. Whenever they talk about me, the demon, they can't leave you, the witch, out of it. They'll curse us as partners in crime, wish us a horrible death, and carve our names onto a pillar of shame, binding us together until our bones are ground to dust.”

Shang Shixu understood all over again that she had really gone and provoked a mad dog. This mad dog didn't just kiss her, hold her, lick her, kiss her again, and protect her. He wanted to chew her up and swallow her whole, so they would never be apart.