The Firework Girl's Strange Stories

Go to Narukami Island’s beaches: Teleport to the southern Byakko Plain waypoint and head west down the grassy ledge to the beach. Speak with the children, including Matsuzaka and Saika, who are searching for the Great Mujina Youkai. After a conversation where Paimon tries to dismiss it as a tale, Yoimiya appears and consoles the children, explaining the Mujina is cute and likes to play tricks. She gives them slips of paper before they leave.

Catch up to the children who are about to leave: Follow the beach northwest to find the children with Yoimiya. She explains her interaction with them, aiming to avoid upsetting them about the Mujina. She then invites you to Naganohara Fireworks.

Go to Naganohara Fireworks: Travel southeast past the southern Byakko Plain waypoint and head east into Inazuma City. Naganohara Fireworks is located near the blacksmith. Yoimiya will mention the Yae Publishing House and their fairy tale stories. Upon arrival, Yoimiya's father greets you. He is partially deaf due to an accident. Yoimiya asks if their firework materials have arrived, but they have not.

Confirm the source of the sound: Go around the north side of the house towards the window. You'll find Sakujirou, a former customer who is now hiding due to an arrest warrant from the Tenryou Commission. Yoimiya explains she can help him by arranging a boat to leave Inazuma. Sakujirou expresses doubt about his original reason for returning. Yoimiya mentions the receipt slips they give out for firework orders. She reassures Sakujirou and states she needs to run errands, inviting you to join her.