"Over-exa- my dearest Senku," Gen sighed, happy to continue teasing him, but it's also true; "without you, I don't believe our world would've done all as it managed to do quite so quickly. You were the engine driving us forward."

But Senku had a good point, that did have Gen sobering a little. While his smile was still very present - there's a more serious glint in his eye, as he considered him. His voice was quieter. "And it's not much of a vacation if people keep putting you to work, is it?"