Luke: it would have been wildly obvious that Jiang made Luke's brain go brrrrr because Luke has one of those faces that shows all the things. Please, make his life miserable. Sit with him and pat him on the back and be kind as well as hot. It's just what he needs. He signs too, prefers it since that was how he initially learned to communicate. Sometimes he turns the implants off and pretends he can't lip read.
Zeph & Erinn: Hey, some strigele deserve spoiling. Clearly, Jiang is one of them.
Soobin: AW YES PLEASE! All the big brother treatment. He's even more baby than Jinhae, but like... in a much more innocent way.
Ari & Felix: Pretty sure that they'll get to know him (in Ari's case, since Felix has lived in MC for most of his life) over a pastry or two. Felix isn't wild about exercising but might have to make a new year's resolution to be able to do more push ups than his brother (Jace).