Booze and the Boss is Maiko’s first side story in Tokyo Mirage Sessions #FE Encore for the Nintendo Switch. You unlock it by completing Chapter 2.
Booze and the Boss Walkthrough
Fortuna HQ
Talk to Maiko in the Fortuna Office. She asks you to go to Tiki to get her some medicine for her hangover. Head to the Bloom Palace and talk to Tiki. She will send you to the Idolasphere in Daitama.
Illusory Daitama
Follow the Path of the Dungeon until you ride an elevator down to the lower level. Pick up the (A) Illusory Fungus and continue to (B) Illusory Clams. Right the elevator to the upper level and go to (C) Illusory Dirt which is in front of the Healing Sphere. Head back to the Bloom Palace and talk to Tiki. Maiko will become the Tipsy President and acquire the Backup Skill Drinking Connections which will give you more money when you sell something.