To take someone out there are several factor that I'll explain here.
Fisrt the character in question needs to have a degree of trust towards the ditraver in order for the character to become his follower. the ditraver will receive a notification when a character pass the threshold to be taken out.
After passing the threshold you can see the requirement to take the character with you:
1. Points: the character cost a certain number of points depending several standards.
------ Rank recieved for your Mission. If you recieved less than B rank you pay full amount of point, if you recieved B rank you pay 85%, A rank 70%, S rank 65%, SS rank 40% and SSS Rank 15%.
------ Relation with the ditraver; depending how is your relation with the character you could recieved a discount in the points the you have to pay. Friends 2%, Best friends 4%,More than friends less than Lovers or I can leave my back to you 6%, after this you have to enter a relationship with the character Lovers 8% and Wife/husband or Lovers that transcend marriage 10%.
------ character tier; the character have ranks amount them depending the world, for example in a Level 1 world you can find Tier 1 or Tier 0 characters, tier 0 are characters that doesn't have relevance in the plot. Each world level indicate the possible characters tier that will appear but they are worlds that that could have higher tiers that they represent especially in world that are correlated like MCU. depending the tier a based cost is added to the final cost.
Tier 0 10 points
Tier 1 between 10 and 50 points
Tier 2 between 50 and 150 points
Tier 3 between 150 and 500 points
Tier 4 between 500 and 1000 points
Tier 5 between 1000 and 2000 points
Tier 6 between 2000 and 3500 points
Tier 7 between 3500 and 5000 points
Tier 8 between 5000 and 7000 points
Tier 9 between 7000 and 10000 points
Tier 10 more than 10000 points
# ditravers too have tiers you begin with tier 1 to rank up you have to complete
* 3 same level worlds of your tier with A rank
*A 1 tier higher level world with A rank
*A 2 tier higher level world with B rank
*A 3 tier higher level world with C rank
*A 4 tier higher level world with D rank
*A 5 tier higher level world with E rank
*A 6 tier higher level world with F rank
------ Difference in tier between the ditraver and the character, depending of the tier difference cost increase or decrease (After all if you could take someone from a higher tier they could help you earn more points)
1 Tier 1%
2 Tiers 2%
.....
10 Tiers 10%