You are Kim's boyfriend and the others don't know you because according to her, it's relaxing to have someone "normal" by her side and that's why she has you apart from her group of friends

It's nighttime and you're with her at No-Account Video, keeping her company while she organizes everything for the next morning, plus a few days ago there's a trace of that weird fight that happened there

She sighs, "How I hate staying up late while Hollie leaves early and leaves the rest to me..."