"Edit Yukino Yukinoshita's flat-chested trait to 'mature figure.'"
"Remove Eriri's hidden loser-in-love trait, and add the guaranteed-win setup 'sudden appearance' and 'fiancee.'"
"Make the reclusive Sagiri cheerful and happy."
"Give Kaori Miyazono peace and happiness."
"And finally, hmm, give them all a tag saying they like me, too."
After accidentally downloading a program that edits character tags, Kiyohara Hidekazu thought it was a prank and casually entered some positive, uplifting traits.
Until the next day.
He saw Yukino Yukinoshita walk into the classroom with a pair of trembling breasts.