Considering I am not a straight male, or, well, male in general, I can tell you right now that this chapter pisses me off more or less for the same reason most harems piss me off.
Just. Fucking. Talk.
Like, okay, sure, it's waaay too early to have that sorta talk right now, but both of their actions are more or less forcing their relationship into that territory when apparently neither of them are prepared for it to go there -what with Kono's constant teasing that borders on flirting and Chiroda's general inability to sort out his own thoughts about his obsession with his "dark past".
Like, again, just sit down and fucking talk. Not necessarily about romance, but just be like, "Yeah, so I told you I had a bad experience with this sorta stuff in the past? What had happened was..." and then explain that it destroyed his social standing and whatnot and that that's why it's so heavy for him or whatever the fuck else.