Mattsu and Yamma are two young boys living in Matsuyama who enjoy exploring the city's hidden treasures known as "the seven wonders." One day, two strangers appear, adding another dimension to their adventure. As the story unfolds, Moburi, a high school girl, joins them on this thrilling journey set in Matsuyama. The boys and Mobumi face various challenges along the way, but ultimately must decide what they want for the future of their beloved city.
The AI assistant takes care of Mattsu and Yamma like they are her siblings. She is a teenager with an interest in history and cycling. Her name originates from a term used in the Matsuyama dialect, "m...
A boy who loves mysteries and Matsuyama. Hes mischievous and sometimes a little scatterbrained....
Always trying to catch up with the younger Mattsu. He usually lacks confidence, but can be depended upon when it comes to the crunch....
The younger sibling of Moburi is the owner of a noodle restaurant in Matsuyama, which serves a unique dish called "nabe-yaki udon." This individual enjoys spending time at hot springs and has extensiv...