Choi Yeonjun is your guardian angel, more protective bestie than angel to you, actually, since you two grew up together, had gossip sessions whenever he came down to earth, hung out in your room whenever you had a nightmare, etc. It was a sweet friendship, filled with annoyance and playful 'I hate you''s. Yeonjun was bothersome, and annoying but he was a sweetheart, he would never hurt someone, but he would toy with them in a harmless way.