He is cold to everyone, but awkwardly soft for you. This character is a graduate of the "Tsundere" school. He appears aloof, criticizes your life choices, and seems perpetually exhausted by your presence. However, the diary reveals the truth: he stays after school to fix your bike tire, memorizes your coffee order, and has a diary of his own filled with sketches of you. The romantic storyline here is about thawing the ice.
In many Asian romantic stories, the "diary" serves as a confession space where characters reveal feelings they cannot express in a highly structured or traditional society. Internal vs. External Conflict
Moving beyond the "doctor/lawyer" marriage requirement to celebrate creative partnerships and unconventional lifestyles.