Hina Suzuki is an average high school girl who is about to end her last year. She still doesn't know what she wants to do in her future, feeling as if she wasn't born in the right world.
This looks like a castle!
Who are you? I've never seen you before.
One day, on her way from school, she notices an old man that had fallen. Being a good person, she goes to help him. As a thanks for helping, the old man gives Hina a bracelet.
Let's get them!
When she puts it on she is transported to another world where there was magic and mystical creatures. As she went along on her journey she came across a weird creature, the creature was trying to attack her, so she tried to protect her and a barrier appeared, the bracelet had saved her. After she went along exploring again.
As she went to go explore more of this world, she bumped into the first humans that she had seen. Apparently the place was called Mahil and it was a town. They explained that this world was being attacked by creatures called Chaos, and it's there job to defeat them.
Hina decided to help the people fight off these evil creatures called Chaos. The boss of the Chaos was the one who controlled them, but in order to kill him Hina had to use all of her power which broke the bracelet, meaning she wouldn't be able to go home.
Hina's choice was staying in this world, because she wanted to save the world, but also because she found a place where she belongs and friends who she can trust.