Keiichi Sagami Is an Impostor -Sleeping with the Childhood Friend I Despise-

Akira Eto is an office worker whose life revolves around games. She used to have a partner in crime, Megumi Makise, but after a certain incident in high school, she can't even look at his face again without bursting into tears. By a twist of fate, she goes to a mixer and ends up across from someone who's his spitting image! She thinks it's Megumi...