Synopsis

Yagami Eiko (Yonekura Ryoko), a detective in the Organized Crime Division of Ueno Central Police Station, is once again busy with her side hustle as a moneylender. She loans money to her colleagues interest-free in exchange for information — then uses that information to crack cases.
After Kasumi, the daughter of Senbaa-gumi yakuza boss is murdered, she is introduced to Kai’s (Saito Takumi) superior, Totsuka (Jinnai Takanori), through Kai — her trusted contact within the Senba-gumi. Totsuka proposes a deal: he wants to know the identity of Kasumi’s killer before any arrest is made. The price? 30 million yen. Eiko agrees without hesitation.