What happened to you? [He doesn't look scared of Noa - maybe a bit horrified because he's a snake, why is he a snake and mostly confused but afraid? No, he's not afraid of his stepbrother.

At the mention of Seto though, Mokuba's face falls.] No, he... I haven't seen Niisama for months.

[Hiryu, meanwhile, is rearing up like its about to attack, because surely a snake monster is a threat to Mokuba. Mokuba catches it though and puts a hand in front of its face, blocking the way and ordering sharply:] No! This is Noa, he's my brother. Don't ever attack him, okay?

[Hiryu makes a little growling noise but obeys, settling back down next to him but keeping its eyes on Noa.]