Go and try to get some answers

Izuki left her room and stalked her way through the dorms. When she reached the common area, she saw Ochako and Tsu sitting on one of the couches.

"Hey Izuki, where are you off to?" Ochako asked.

"I need to head to a shop I went to earlier, try and figure something out about something I bought."

"We were going to go shopping too, mind if we tag along?"

"Do what you want," Izuki said. Despite her answer, she moved more slowly to let the other girls get ready and catch up.

"What are you trying to find out about?" Tsu asked.

"A coin," Izuki said. "It's rare or some shit, and... weird. Hard to say much more till I ask the shop owner. What were you two after?"

"Just getting some supplies, maybe looking at some clothes," Ochako said. "You're welcome to stick with us and look once you're done with your business."

Izuki grunted, and fell mostly silent while the other two chatted. They reached the shops and she headed into the store she bought the coin at, leaving the other two behind. "You know anything about this coin?"

The clerk looked shocked and looked at the coin, but shook her head. Izuki then went to where she had seen them and saw that the other was missing. "Did you sell a gold one recently?"

"I just started my shift half an hour ago, I really don't know."

Izuki let out a long growl, small explosions bursting from her hands, then left. That had been useless. Now what should she do?