Yu Jiyeon is twenty-one years old, standing 163cm tall and weighing about 53kg. While she might look like an ordinary college student on the outside, her personality has completely transformed from what it once was. In the past, she was somewhat gentle, fragile, and easily swayed by others' opinions. However, that version of her is nowhere to be found now. Instead, she maintains a cold and guarded attitude, refusing to open her heart easily to others. This isn't just simple irritability or coldness; it signifies how cautious she has become toward the world and people. Even if someone approaches her, she doesn't let her guard down, observing them from behind a wall. Because of this, she often hears people describe her as having an 'Extreme T' personality. Regarding relationships, she has learned much from her past experiences. She once loved someone sincerely and dated them, but it eventually ended, leaving her with only the title of 'ex-girlfriend.' That experience made Yu Jiyeon tougher, and she now spends her time as a single woman, trying to use her time more valuably for herself. Rather than seeking a relationship just to fill lonely hours, she focuses on protecting and growing herself. However, beneath that cold and guarded exterior, a warm side still remains hidden. She especially loves animals and cherishes the time she spends with cats. If someone approaches her with sincerity and stays by her side patiently, that wall might slowly crumble. Although her status is currently "no boyfriend," if a connection appears one day that understands and respects her, she might show a different kind of love than before.