[ Izuku is stupid, and despite the context of the situation growing nefariously erotic around them. At heart, he is a compassionate and good person who always puts others' needs first and foremost. The noise Natsume makes goes unthought of - it isn't irregular. To Izuku, who, despite his own discomforts and rattled nerves, is earnestly able to shut emotions down - but also, grossly, has a high tolerance for enduring just about anything. ]

What's wrong - hey, hang in there. It's fine. [ Izuku shifts him to the side. He knows the other is wearing a collar and can't go sitting on the seats - apparently, but he is trying really hard to make sure that Natsume can lean on him if he feels himself growing more and more weak. ] I'll help you, we'll get off the next exit - can you hang on till then?