Sori Lee is alone after she transfers to a new school. She finds a letter taped to the underside of her desk and it leads her on a scavenger hunt to find letters hidden around the school. The formatting and presentation of the letters, especially the first one, is drawn beautifully. It's a cool concept about mindfulness and how there is beauty and adventure in the everyday world around you if you just take the time to pay attention; how seeing the world and people around you with fresh eyes (closing them to preconceptions) can make things sparkle with magic and wonder. Small things can make life fun. But as the scavenger hunt continued, the purity of the letters got tainted by them having added significance. And by the concluding chapter, the initial fun and cute adventure (what originally attracted me to the manga) got completely ruined by drama.