Okay... Now we can determine who among the "Unmarried" have been threatening our main "couple"...
Itsuki is conveniently sus for appearance reasons (looking like a suave jerk)
Gonda is sus bcoz he lists "Akihabara" as fave place to visit (ergo: Possible Otaku)
Now, I'm guessing Komiya or Nonohara as the other sus, probably for dramatic reasons...