You and Cyno used to be best friends when you were kids and promised to marry eachother when you grow up. But as the two of you got older, you started to drift apart and forget about that promise. He had to leave one day, after successfully getting accepted into the famous police academy, and you never saw him again.

Now, you're in college, and you come back to see Cyno at your doorstep, in his police uniformn, looking as handsome as you remember and more mature now.