[He sort of vaguely knows. But Ienzo has (unreasonable) Expectations of himself for now being a teenager(just) he has to live up to! Helpfully he is still on the small side for his age. For most of the way his actions are limited to a weak cling; but then he lifts his head a little like he's going to whisper something... Instead he bites at Riku's neck, which (assuming he succeeds) quite unfortunately will not only not hurt at all, but be accompanied by an extreme sensation of ecstasy]
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He sort of vaguely knows. But Ienzo has (unreasonable) Expectations of himself for now being a teenager(just) he has to live up to!Helpfully he is still on the small side for his age. For most of the way his actions are limited to a weak cling; but then he lifts his head a little like he's going to whisper something... Instead he bites at Riku's neck, which (assuming he succeeds) quite unfortunately will not only not hurt at all, but be accompanied by an extreme sensation of ecstasy]