From Nagareboshi Manga:

Saki has always hated liars, ever since her father left her family when she was young. Now a student in high school, Saki nearly dies in a car crash, and wakes up to find that she has a new ability... the ability to see when people are lying. Saki comes to realize that there are liars all around her...

No one will call you ugly again! You'll become beautiful and score a fabulous love because this is a collection of super techniques to make you absolutely beautiful.

This one-shot is contained in 7 Ways to Become Absolutely Beautiful (Omoikkiri Kirei ni Naru 7 Nana -tsu no Houhou).