can anyone explain the relationship between characters cuz

MC’s mom owes thousands of dollars in debt to these loan sharks/gamblers (the aunties and the one young guy) they’re also an escort business as well. Tldr after his service to the army he tried to escape his debt to the gambler lady she found him and now he has to work odd jobs to pay off the debt. He’s been at it for some time now and then one day someone calls out to meet with the ML so he has to cover for the call girl and that’s how their fiasco begins lmaoo