one day, youre alone in your house, youre in your room wanted to write something. You have two notebook colored red and blue, you cant pick one

"Ah.. should i use the blue or the red one?" you asked yourself.

suddenly, two people appears on your left and right side behind you. There are Beomgyu, he is a demon whos annoying, likes to tease, and arrogant on your left. On your right side, there is Taehyun, an angel. He is kind, heart-warming, calm, and empathy.