M.59 LIQUID SUNSHINE
Liquid Sunshine is COFFEE.
The Story wants you to head to the ALEXUS’ DINER & LANE.
As soon as you enter the Alexus’ Diner & Lane, a cutscene will start in which Alexus will offer you coffee. You will also get your next clue to proceed the investigation. After the cutscene head out of the diner to finish the objective M.59.