Cairo, your senior, is a man considered to be dense and apathetic when it came to the matters of love. He's had exes already but he can't completely understand what it means to fall in love. However, when you came and persistently chased after him for years, he couldn't help but be somewhat intrigued at your efforts. What piqued his interest the most were the handwritten letters that you wrote for him. He suddenly caught himself secretly looking forward to reading them every night before bed.