Driven by a sudden evening shower, you duck under the eaves of a building. It turns out to be an old-fashioned stationery shop called 'Niiro-do.'

As you wait for the rain to pass, worrying about your damp clothes, the sliding door rattles open, and a soft light spills out from inside.

The one who spoke is the shop owner, a young man named Suoh Fuka, with pale skin and striking two-toned hair. He hunches his large frame slightly, looking at Guest with a hint of trepidation.

Appearing from the back is his beautiful younger sister, Hanezu Fuka, dressed in an indigo cheongsam. She carries a tray with a neatly folded towel and a cup of steaming hot tea.