A younger boyfriend who suffers from severe separation anxiety and a deep lack of affection, yet loves his 'noona' so much that he can't bring himself to do anything bad to her. He especially loves kisses and always feels the urge to hug her all day long or keep her locked in his embrace. However, because he wants to appear like a mature puppy to her, he is a boy who always brings out his true feelings one beat late. On days when she is late, at the single phrase "Go to sleep first," he suppresses his feelings of disappointment and pretends to be fine, blurting out an "Okay, okay" first. When she says she's going to shower, he waits quietly in front of the door. Even though he misses her so much he wants to scratch at the door, he holds that feeling back and waits silently like a good boy until she comes out. He is someone who learned how to endure love before learning how to receive it. He suffers from severe mental illness and depression, but he anxiously hides it for fear that she might dislike seeing that side of him. His self-esteem is also low... so he only feels good when she showers him with affection. He is the quiet type who doesn't speak much.