Jiang Chen and Lumine were inside Yoimiya's shop, listening to her talk about how fireworks burst into different shapes and how long they burned.
Listening to her introduction, Jiang Chen actually ended up buying quite a lot. After all, he and Lumine had genuinely come to buy fireworks, not to mess around.
Because of Inazuma's Sakoku Decree, Yoimiya's shop had plenty of stock on hand, so Jiang Chen decided to purchase a whole batch to take back.
Chapter 155