Holy shit, I just realised that if you combine Burn & Breathe with Summer Stars, it gets twice as angsty for All Might: not only did Enji hurt Shouto, but he also hurt the boy All Might sees as his son. He caused so much pain to BOTH of them, and suddenly the words on Izuku's arm make tragic sense, and All Might can barely take a fucking breath without his heart bleeding for those beautiful boys. One half of him wants Endeavor's head on a stick? Pffft, more like only 1% of him doesn't.
Oh my god this hurts me. The words on his arm make everything so much worse.
Realized another thing about the B&B/SS crossover; Inko would figure everything out one hell of a lot sooner. Considering that she saw what Izuku’s face looked like on the day Shouto got burned, I’ll bet anything that she knows EXACTLY who Shouto is to her son the second she sees him walk through the door.