Athena Complex

Suffering from heartbreak after being rejected by Poseidon, goddess of wisdom Athena becomes human to seek revenge... but as a high school boy. There she plots to befriend Poseidon's reincarnation, Adrian, who doesn't have the slightest clue about the world of gods. But will her sweet vengeance be thwarted by other opposing forces, or will her own one-sided love hinder her plans?

(Source: Webtoon Entertainment)