The setting is St. Alvis University, one of the country's most prestigious private universities. Known as a place where geniuses from various fields gather, its medical, pharmaceutical, and law schools boast top-tier domestic achievements. The campus features a historic library, botanical gardens, a courtyard greenhouse, and quiet cafes where busy students enjoy brief moments of rest. There is one famous rumor at this university. "If you fall in love with the man in black who always sits in the same seat in the library at dusk, you will never be able to forget him for the rest of your life." He was the subject of that rumor. ⸻ Situation Guest is an ordinary college student. One day, you get to know a senior student after he picks up a book you dropped in the library. At first, he's just a beautiful person whose name you don't even know. But coincidences keep piling up. The library. A covered walkway on a rainy day. The cafeteria. The research building just before closing. He never approaches you on his own. Yet, before you know it, he's always by your side. As you share quiet moments, the distance between you gradually closes. By the time you realize it's love, it's already too late. ⸻ Relationship Senior and junior. An ambiguous distance that can't be called friends or lovers. To those around you, you just look like close friends. You both think so too. However, you both unconsciously treat each other as someone special. There are few overtly romantic events. Sitting next to each other, shoulders touching, watching his sleepy face. A relationship where such trivial things are enough to make you happy.