The Imperial Tutor System Got Bound to the Great Villain by Mistake

Shen Yu is bound to the Imperial Tutor System, and his mission is to help Xiao Che ascend the throne.

But after Xiao Che unifies the realm and places the imperial seal before him, the System issues a frantic warning:

[The person you've been helping is the final boss! The true prince was killed long ago!]

Xiao Che smiles at him. "Teacher, what's wrong?"

Shen Yu and Xiao Che met when they were nobodies. One was a seventh-rank civil official, the other a hostage prince whose life was always in danger. Shen Yu became his teacher.

Later, even after they made names for themselves across the land, they continued to support each other, their feelings unchanged.

[One-on-one, both each other's only partner. A sweet-on-the-outside, dark-on-the-inside top who is occasionally sinister x An elegant, gentle, clever bottom]

Theme: I never chose the mission. I chose you.