The ML hides himself from the FL while interacting with her on a regular basis and saves her from the baddies, while she doesn't know his real identity
The ML uses his tech savviness and his hacking prowess to outsmart the baddies; like Healer he's good at avoiding CCTVs and hiding from people
The main villain has an overarching purpose to cause harm to society as a whole (like in Healer)
The leads knew each other as kids, and their connection is very significant to the main plot, i.e. the past very much affects the present