Nellie left her usual training gym.
Coach Sidney hadn't shown up for the past two days. When she asked the gym staff, they told her that the coach was on leave but was supposed to come and teach her today, yet he hadn't shown up.
Although it was supposed to be a lesson, it had become more like sparring. At first, Nellie used her full strength against Coach Sidney, but she noticed that her physical strength improved rapidly after each fight, faster than it usually did.
Luckily, she noticed quickly and started to control her power, but even so, there were several times when she nearly injured the coach.
Actually, what Nellie really wanted to learn was how to use an axe, but finding a proficient teacher who could instruct others in this was not easy.
She couldn't ask her mother to arrange a teacher for her, as her mother wouldn't agree.
If her mother knew she was obsessed with this strange axe, she would certainly ask Nellie to return it.