The slow burn will burn slow. You have like a year or two depending to wait if it goes back to hiatus, if you are really invested on their relationship rather the story you can just read the novel and skip to the parts that Yuda started to fall for Cordelia. They have had sex, both of them were 17 in the start most definitely aged in the end, they dont go back to the modern world just lived life in the game-now-reality

Guys, is there any progress in their relationship in the novel? And how far does it go? (Feeling kinda embarrassed here, but I'm talking about smut)
And how old is the male lead, exactly? And will they return to the real world later right? How will they deal with this?