The Hero died, now what?

In the eyes of others, I am what you would call the perfect student—scoring As in every subject, presides over the student council and has a handsome face that would make any girl swoon to boot (maybe that's an exaggeration, but you get the point). However, in reality I led a lonely existence tightly controlled by my parents, who have high expectations for my future success.

Then, she suddenly appeared. She who proclaims herself to be a Goddess came forward with an absurd proposal.
"Hero, I've finally found you! Let's go and defeat the evil Demon Lord together!"

"Er, this is the men's restroom..."

This is the totally-not-an-isekai story of how I, a normal student leading a boring life on Earth, suddenly got involved with a ‘Goddess’ in her grand scheme to vanquish a certain ‘Demon Lord’, who just so happened to be hiding somewhere on Earth?

Oh, did I mention that I am somehow the reincarnation of a legendary Lady Hero from the same fantasy world the Demon Lord originated from?

//_____________________________________________________
This is a rewritten version^
Author's note:
-this is a Female-to-Male GB story
-expect a lot of danmei (BL) references
-I included the girl's love subplot tag as MC ends up with a girl, but it isn't strictly GL(?) since MC is still a guy physically

Cover art by 稔也 (pixiv)