34 parts Complete Seiah is a shy, nerdy girl who secretly adores the campus heartthrob, Luhence. When Luhence confesses his feelings to her, Seiah believes that their love is genuine. However, she soon discovers that his affections were merely part of a bet.
Heartbroken and targeted by bullies, Seiah finds an unexpected ally in Achilles, who stands up for her and becomes a true friend. To cope with their own romantic struggles, Seiah and Achilles decide to enter a fake relationship to get revenge and win their exes back.
As they spend more time together, their pretend romance begins to feel real. They both gradually realize that they have fallen for each other for real.