Hythlodaeus nods, very slightly, and yes, he knows down to his bones that while the reassurance is necessary, the tenderness is necessary, the words are necessary, there is also the full awareness that Hades is. Tired. Worn thin. And so not much would be overwhelming, and Hythlodaeus does not wish to add to his burdens.

He's done that enough, even if he did not know that would be the effect.

For now, he hums slightly. "I do. I know it."

He chases slightly the lean-back, but only to bump his nose against the tip of Hades's, eyes barely blinking open, a little more of the tension easing from his face with a brightening of the small smile.

"I will not go anywhere. And it is good that you have grown close enough for this." Oh yes, he knows whom Hades means, and is glad. He has cared about her from the very first, after all, seeing not only similarities but the differences with her counterpart they had known for so much longer, as well. For herself, as the time spent with them here on the train has reassured him Hades sees in her, as well.

But also, his eyes crinkle so very slightly as he straightens up his own head, a gentle tease rather than a worry. "You don't think she'd mind, do you?"