Kinda outta topic but this reminds of all the Yuri on Ice Mafia! Au fanfics I've read. Especially Chris has blond hair and green eyes like Chris in YOI, and not to mention their touchy-feely attitude. They even have the same name, ffs. And Kaminsky is russian as well so it's such a surprising coincidence lmao(≧▽≦)
Slow burn is the best, I love it. It's better than a rushed story anyway, in my opinion.
Also, to this complaining about how slow the progression it is, don't y'all know that danmei novels/Chinese novels usually live off slow burns? The couples usually don't end up with each other until the novel surpasses the 100-chapter mark. Anyway, obviously the comic would be shorter but ya'll probably get what I mean, if you don't like slow burns, I don't recommend most Chinese novels. If you want fast burn with multiple world transmigrations, I'd recommend "The People Who're Supposed to Kill Me Fell For Me Instead". It has 123 chapters and the romance isn't slow burn like most.