In the continuation of Yatogame-chan Kansatsu Nikki, Jin Kaito, a Tokyo-raised high schooler, relocates to Nagoya. There, he encounters Yatogame Monaka, a classmate known for her feline features and strong Nagoya accent. Despite their proximity, Yatogame's reserved nature challenges Jin's efforts to connect with her. This beloved comedy series celebrates Nagoya's charm through the endearing antics of Yatogame-chan.