Despite the overt discussions of asexuality and aromanticism right in the text, I really feel that the broader nature of romantic fiction is reasserting itself in this manga. We have the main character going "ba-dump" upon seeing the other lead's naked body. One little sound effect which basically brings in all of romance and sexuality right there. And we have the other lead starting to seem less asexual and more just fearful of physical and even emotional intimacy because she thinks her scars make her repulsive. And we have seriously increasing levels of emotional intimacy, which is clearly set to juice higher still as it sinks in to motorcycle girl that this person is not bothered by her scars and still loves her and stuff.
In short, my bet is this is gonna be a romance. I wouldn't even be surprised if it was a sexual one. And why? Because as I said way up the thread, in romance fiction even the robots are romantic.