[There's very little surprise at the demanding words. At all.
However...
His expression softens, a bit, as the next words are said. No, they hadn't told him that. A part of him had wondered if Toshio had even...
Then, he's left looking a bit...surprised, at the next part of what Toshio says. He'd seriously never expected something like that to come out of Toshio's mouth. For a moment, all he could do was stare back into Toshio's eyes. Then, after a couple of seconds, his face tenses as he turns his head to look away. Nobody had told him that. The truth is written clearly within his expression.]
...I didn't know that.
[After a moment, he briefly looks back at Toshio's face, and then closes his eyes. He's thinking back to the day he'd walked into that room to find his father just...gone. Then, he went back in there to find those typed words in the form of a suicide letter. His father had simply given up, only to be met by a cruelly ironic twist of fate. His seeking out immortality had led him to the path of eternal suffering.
Seishin lets out a sigh, before speaking in a low tone.]
I went there to find out what happened to my father.
NO U
However...
His expression softens, a bit, as the next words are said. No, they hadn't told him that. A part of him had wondered if Toshio had even...
Then, he's left looking a bit...surprised, at the next part of what Toshio says. He'd seriously never expected something like that to come out of Toshio's mouth. For a moment, all he could do was stare back into Toshio's eyes. Then, after a couple of seconds, his face tenses as he turns his head to look away. Nobody had told him that. The truth is written clearly within his expression.]
...I didn't know that.
[After a moment, he briefly looks back at Toshio's face, and then closes his eyes. He's thinking back to the day he'd walked into that room to find his father just...gone. Then, he went back in there to find those typed words in the form of a suicide letter. His father had simply given up, only to be met by a cruelly ironic twist of fate. His seeking out immortality had led him to the path of eternal suffering.
Seishin lets out a sigh, before speaking in a low tone.]
I went there to find out what happened to my father.