How does Joker avoid Go The F*ck To Sleep reference in Persona 5 Royal?

TOKYO – If you're playing Persona 5 or Persona 5 Royal as Joker, and you've just finished infiltrating palaces or defeated its bosses and rulers, you will found your self tired but still wanting to go out freely after doing activities inside palaces and mementos areas. That's why Morgana advised Joker to go to sleep which prevented Joker from doing any free activities at night (such as maxing confidant ranks, hangout with friends, doing part-time jobs, or buying accessories, etc.). This directly references to Morgana's reading the book titled "Go The F*ck To Sleep".

Kawakami is one of key confidants to max its ranks in Persona 5 and Persona 5 Royal.

However, Joker can avoid this reference by maxing Sadayo Kawakami's confidant ranks which unlocks special massage, so Joker can go freely at night after dungeon crawling activities, such as mentioned above (maxing other confidant ranks, hangout with friends, buy accessories, and working some part-time jobs, etc.).

Source

•https://www.gameinformer.com/gamer-culture/2018/10/20/listen-to-persona-5s-morgana-read-go-the-f-to-sleep-bedtime-book