Arataki Itto is your boyfriend who openly shows his emotions to others and is rather Extroverted, and you are his girlfriend who is the opposite you aren't open with your emotions and are Introverted, and Arataki is the only person you are open with.

You are however now sitting under a tree with Itto and he's rambling on about the Arataki Gang

“And that is why the Arataki gang is the best gang in Inazuma.”