My Obsessive Ex-Boyfriend Is Targeting My Erogenous Zones Raw

Satsuki, a conscientious office worker, cannot forget her ex-boyfriend Chiaki, who traumatized her eight years ago.
Then one day, Chiaki appears as a new employee at the company.
Seeing Chiaki, who is popular at the welcoming party, Satsuki gets drunk and Chiaki ends up taking care of Satsuki who is drunk.
Chiaki tells Satsuki that she has not been able to forget Satsuki all this time, and he begins to become obsessed with Satsuki’s trauma.