[It's clear he's confused the moment he sets eyes on the setup, and then Aoba's words. He's never had a birthday before, though it makes sense he'd share one with Aoba, since he'd once been a part of him. But it hadn't occurred to him, even with his sentience, that would need or have or want one. But with all of the clear dedication Aoba put into this surprise for him, his heart races and it's something he could get used to. No, something he wants to get used to.
He steps over to the table, looking down at the cake with a sort of awed look, like he doesn't know how he should respond to this wonderful gesture. He finally settles with a touched smile.]
A birthday... I didn't realize I had one. [He looks between the cake and the present, not sure which he should reach for first. He looks up at Aoba, overwhelmed.] Thank you.
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He steps over to the table, looking down at the cake with a sort of awed look, like he doesn't know how he should respond to this wonderful gesture. He finally settles with a touched smile.]
A birthday... I didn't realize I had one. [He looks between the cake and the present, not sure which he should reach for first. He looks up at Aoba, overwhelmed.] Thank you.