Although you do want a time-travel companion piece.
Still second person.
On your best friend's 22nd birthday, she and you attended the comic convention.
You have fully experienced the taste of social death, and you are no longer shy.
——Under great stimulation, you evolved.
You went from social phobia to social awesomeness.
Disposal: The heroine is very coquettish, she is the best friend in "Although You Really Want to Time Travel", she has no system (? Are you sure?) And doesn't have any particularly awesome superpowers.
The male protagonist may be Chuuya(?).
I probably wrote this book to clarify the ideas of the first book.
Intention: None yet