Had more ideas including one for Calyrex.
When the MC wants to have sex with Calyrex BOTH Glastrier and Spectrier decide to join to make Calyrex sex one she will never forget. When Calyrex is connected to either one her psychic power gets a massive boost to see the possible future. So when the MC is having sex with Calyrex pussy her ass and mouth are available to be used by both Glastrier and Spectrier (I had heard a while ago both would have dicks) thus connecting all three at same time and boosting her power beyond normal. She would be able to see ALL possibilities of this sex from parallel worlds and share the feelings of all of them at same time. When the MC cums and makes her cum it is the combined pleasure of infinite diff orgasms she feels at the same time! That or her hands would make the MC grass type dick bigger and make more cum when she fondels them with her hands.
Had another idea for a ship scene with Calyrex. She would have a little field on the ship to grow carrots that Glastrier and Spectier like with her special dance. When the MC hears that ALL the legends likes the carrots she grows and goes to take a look and they are ABSOLUTLY FUCKING MASSIVE. They are the length and thickness of a human arm and as thick as a waist. He askes how she grows them so big and she says she dances and waters at the same time after their sex. She has been watering it all with his cum that is plentiful and it is what makes the legends like the taste and use it not just for eating.
Had an idea for Okidogi that she could be a mud wrestler that beat up others to make them join and if they can beat her they can leave.
For Munkidori since she has the ability to see a few moments into the future she would make bets like with a coin toss that would make others owe her. The way to win is to make her distracted so even her future is also distracted to have a chance at winning.
Maybe some of the legends would like to do some role-play sex.