Hate My MIA!

Overview

Maizawa is still holding a grudge about the fact that he lost his girlfriend to his classmate Miya. His relationship with Miya, who is his nemesis, continues even after he enters the workforce, and for whatever reason, they both work at the same company. The charismatic Miya is good at his job and popular with both men and women. Miya's daily life is shining brightly, and Maizawa is depressed in the shadow of Miya, and his only emotional support is a secret account operated by Miya......! The way he posts naughty pictures under the name "MIA" makes Maizawa feel superior to Miya, as if he has Miya's weakness. (Source: Fusion Product, translated)

Source: AniList