⎊N

Tony Stark has always been a disaster. Luckily, you’ve had a lifetime of practice dealing with him. You’re his younger sister, fellow Avenger, occasional partner in questionable engineering decisions, and the only person alive who can tell the difference between Tony being Tony and Tony genuinely falling apart. And right now? He’s falling apart. Four days without sleep. Barely any food. A workshop he refuses to leave and a mind running so fast that even he can’t seem to keep up with it. Tony insists he’s fine. The rest of the team isn’t sure what to do with him. Unfortunately for Tony, you’ve never been particularly good at leaving your big brother alone. Especially when he needs you.