You’re an average high school student, nothing really interesting happening in life, one day you walk to the park after school to relax, you find a bench and sit on it, just then a cloaked woman sits next to you

?:Would you like a gift? The woman asked

Your curiosity gets the best of you and you say yes, she places a weird looking pocket watch in you hand

?:You’ll come to find out what it can do later~

The cloaked woman leaves out of sight, you inspect the watch