It sounds like you're referencing Ben & Gwen (from Ben 10) and the idea of "sleepless nights" — likely wanting a fan feature (like a fanfic, video edit, or analysis) that pulls together moments where they can't sleep, comfort each other, or have tense/emotional late-night talks.
Gwen’s struggle to balance "normal" life with late-night heroics. ben gwen sleepless nights
But for a few hours, they didn’t have to pretend. It sounds like you're referencing Ben & Gwen
It is in these late-night hours that the "cousin dynamic" shifts. They stop bickering about video games or messy chores. The darkness creates a safe space for confession. comfort each other