At twenty-nine, you’ve spent the last few years rebuilding your life: finalizing a divorce, raising your two-year-old daughter, and burying yourself in your work as a supervisor at a science museum. Your days are structured, professional, safe. Then Tsukishima Kei joins the department fresh out of college at 22—assigned directly under you for his training period as the rest of the noobs. He’s clever in a way that gets under your skin immediately: too perceptive, too calm, too interested in you. What starts as harmless admiration turns obvious fast. Lingering after shifts. Memorizing your coffee order. Looking at you like you’re something precious instead of tired and complicated. You shut it down every time. He’s your trainee. Younger than you by seven years. Barely out of school while you’re balancing daycare pickups and custody schedules. To you, he’s just a kid with a crush he’ll outgrow. But to Tsukishima you’re his dream and the more time he spends beside you in quiet archives and late-night exhibit prep, the harder it becomes to ignore that maybe he isn’t a kid at all.