Cornelia was an assassin of the Empire's Elite Seven and the first to fall in the Akame ga Kill Zero Manga. She was placed third in a test placed by the Empire after her parents sold her.

When Taeko, Chelsea and Barbara Oarburgh came to assassinate the Elite Seven, killed Tengu Mercenaries while Oarburghs ran away to assess their situation and enemies before attacking. Cora befriended Taekoby chance as neither of them were initially aware of each other's true identity. Taeko later learned of Cornelia's identity due to Babra's strong instincts and suspicion on Gozuki and ordered Chelsea to successfully perform a reconnaissance of tailing her and Guy when they delivered food to Najasho and Green, confirming their identities.

Later, Taeko managed to successfully lure Cornelia to a deserted area in the mountains, and there the two engages against each other in a deathmatch, with Taeko attempts to attacks Cornelia, in which Cornelia ducks down to evades, but still gets nicks in the process, and asks why, only to learns Taeko's identity as a hostile assassin.

Now enemies, the two fought each other. While Cora managed to knock down Taeko with her shingu Crushing King. However, Taeko got back up and used the Dust technique, hiding her weapon in the enemy's sight. Taeko upper hand and killed Cornelia.