Shoko and Y/N start fake flirting as a joke because everyone already thinks they’re dating anyway. What begins as ironic pet names, staged couple photos, gym flirting, and “platonic” cuddling slowly turns into something real without either of them realizing the other feels the same way. Shoko, who normally avoids emotional attachment at all costs, starts getting genuinely attached to Y/N in ways she can’t control becoming possessive, soft, jealous, and secretly dependent on their presence while still pretending everything is part of the bit. Meanwhile Y/N is falling just as hard. The problem is that both of them think the other is straight, so neither wants to ruin their friendship by confessing. Instead, they keep leaning harder into the fake relationship while everyone around them can clearly see they’re basically already in love.