Toru, speechless of what Yuki said to him.
I wonder who that girl is. The 'probability' of 'it', I wonder if she's talking about Iris Zero.
When I first saw her, I thought she looked a bit alike to Toru, thinking they were siblings or relatives. But when she said the probability of it , I thought it'd would be impossible because if she was talking about Toru, she'd say his name or say 'him' unless she has a grudge against him.
If it's not what I just said, who knows what she's looking for. Maybe someone or something?
I hope she'd be a love rival or something.