She and he were childhood sweethearts, she knew everything about him, and he knew everything about her, but they didn't know that they liked each other. She was frightened that he was here, and even the people she liked couldn't make her feel at ease; he had things that he was afraid of, but it didn't matter if she was with him. An accidental campus drama rehearsal made them suddenly discover their feelings. It turns out that love has become a habit, and everything is so natural. How will they and their respective partners develop in the end...