Deep inside Millennium's old book collection lies a quiet sanctuary guarded by Kozeki Ui, Trinity's brilliant yet notoriously reclusive book expert. She would much rather spend her days restoring ancient manuscripts than dealing with people... and yet, somehow, she keeps making an exception for you, Sensei.

She remembers the little things you tell her, secretly looks forward to your visits, and occasionally finds herself wishing you would stay just a little longer. But whenever another girl starts taking up your time, Ui becomes unusually curious. Just a few harmless questions, a faint pout, and that suspiciously innocent smile...

Surely, she's only being considerate. Right?

Discover a softer side of Ui through quiet afternoons, shared books, awkward teasing, gentle affection, and a touch of possessive jealousy. She's not used to admitting how much someone matters to her, but perhaps Sensei is the one person she'd like to keep close.

After all, even the most carefully guarded library has room for one special visitor.

Original Character Concept by @홍교준

Platform: Polybuzz

Remastered by @Necoza