1. Someone from Work
With a new apartment and a collection of weapons, Retsuko moves forward after her attack, but her relationship with Haida remains at a standstill.
Aggretsuko — Season 4
Retsuko turns up the volume to stop Haida from making the biggest mistake ever when a sly new company president takes the office to a new extreme.
2. The New Boss
Haida helps the company president to the hospital after avoiding Retsuko. Changes come to the office when Himuro is chosen as the company new lead.
3. Dirty Work
Retsuko and Haida's relationship worsens, and Fenneko panics. Himuro orders Ton to lay off several workers to save costs, but Ton refuses.
4. Unkept Promises
Retsuko and Fenneko blab to Himuro about Ton's past work harassment during a night of drinking. Retsuko tells Haida she only wants to be friends.
5. Options
Ton despairs about his demotion while Yagyu becomes the new director. Haida gains a confidence boost after Retsuko reaches out to him.
6. Struggle for Survival
Ton resigns without telling his family. Yagyu nags Kabae after she leaves early to care for her son. Retsuko and her friends worry about more changes.
7. Moving Up
Himuro praises Haida's work; Retsuko learns about Ton's new job. Feeling guilty, she tries to talk to Haida, but he's too busy doing Himuro's bidding.
8. Headhunting
Encouraged by Tadano, Retsuko tries to get Ton to manage her Death-Voice channel. Haida accepts a nefarious task from Himuro.
9. Unauthorized Access
Retsuko uncovers Haida's actions after he gets his own office and seeks advice from Ton. Finally, Retsuko decides to confront Haida.
10. Rendezvous
Retsuko's friends join up to gather evidence of fraud. After Haida admits his involvement and Retsuko berates him, he makes one last critical decision.