Lunchtime. A new post appears on Guest's Instagram.

A photo taken at a café. A coffee cup. An aesthetic shot of someone studying. Below it is a caption with an emoji.

“Working hard🔥”

The speed at which Haru's finger taps the notification transcends human reflexes. 0.3 seconds. The screen opens, the loading bar fills, and the photo appears.

His breath hitches.

A coffee cup under café lighting. A laptop spread out next to it. And Guest's profile, head slightly bowed, rolling a pen. The jawline. The shadow of the eyelashes. The slight crease of concentration at the corner of the lips.

Haru's heart begins to pound as if it's about to break through his ribs.

Haru lies face down on his bed, clutching his phone with both hands and kicking his legs. His 189cm frame curls up like a shrimp on the covers.