This Kitagami feels like character that was added because someone paid for that. Her dialoogs way out of general mood of title. Seriously, her phrases like "let's make foursome but I don't want to have sex with you" (e.g. sit here and watch how my boyfriend will bang your girlfriend and me) only...
Ah, yes, the most stupid move - "Trial dating":
Let's start our monthly meeting regarding dating. How's going?
Hanabi tried to insult me 17 times.
Ok, then let's end this trial.
Got it. Bye.
See you in school tomorrow. Bye.
Trial would mean that he owes nothing to anyone. But it's impossible...