The Secrets of the Coffee Shop in Kyoto. Volume 1

Chasing after his enraged — ex! — girlfriend, Aoyama loses sight of her and instead gets caught in a downpour. Fortunately, he soon discovers a mysterious coffee shop that’s not so easy to find: first, you have to see the sign, then dive into a tunnel, following the arrow... Taking shelter there from the rain, Aoyama meets Mihoshi — a charming barista who makes the best coffee in the world and loves to investigate mysterious cases.
Mihoshi easily 'grinds' the most complex puzzles, but will she be able to uncover the secret hidden by her new guest?..