One of your leads following Playing for Time, this Main Job is the first of a series of related quests that comprise Takemura’s questline, followed by [Gimme Danger], [Play it Safe] and [Search and Destroy]. Unlike your other leads, this one won’t be immediately available - give it some time, however, and Takemura should call and arrange a meeting, starting this quest.
To get the ball rolling, you’ll need to seize the initiative and travel to where Takemura wants to meet up with you, which is near the Japantown West fast travel terminal in Westbrook, just across the bridge from Kabuki, Watson. Follow the quest trail to the marked location and wait for Takemura by interacting with a concrete barrier.
Chat with Takemura when he shows up, then you’ll meet with his contact. Say what you will, and when your negotiations are over, Takemura will turn to you for other options. Recommend Wakako, then ride with Takemura to go meet with her at her usual haunt on Jig-Jig Street. Talk to her, get the intel she offers, then talk to Takemura who promises to call you in a day. Just skip time until the promised call comes, at which point Down on the Street will end and the followup quest Gimme Danger begins.