Gen grinned. "I'd say here I have the strongest argument for magic being afoot, don't I?"

When Senku reached for his hand, Gen didn't think to resist, letting his arm be tugged and used for whatever his scientist needed to do. Which, this time at least, was something extraordinarily nice. Whoever didn't think that Senku could be sweet wasn't paying any attention.

Pointing it out annoyed him, however, and he's already teasing about the magic thing. Gen let that go unsaid, simply smiling at his new present with a soft, very fond expression. He would tell him, quiet and honest, "Thank you, Senku-chan."