In episode 5, Otonashi and Angel had a conversation about Yuri's dream and how many Hinatas there were, which seemed totally random and out of nowhere. When I first watched that episode, I didn't get the humor and meaning that I expected were there in the conversation. Is there a joke or meaning to those remarks, or are they just some disposable lines?
The curious conversation between Otonashi and Angel
音無:「すまん!ゆりの調子が不安定だ。 原因は、昨夜夢に日向が出てきて……」
日向:『今日の俺と明日の俺が同じ俺だと思うな。気を付けな。』
音無:「……と忠告してきたことによる。そして今、その忠告が事実であることをゆりが証明しちまったところなんだ。」
天使:「日向君は二人いるの?」
音無:「あ、ああ、そういうことになる。」
天使:「三人以上いるかもしれない?」
音無:「え?ああ、ありえる。」
天使:「お気の毒に。」
Otonashi: Sorry! Yuri's a little emotionally unstable. Because last night, Hinata showed up in her dream and—
Hinata: Don't think that the me from today and tomorrow will be the same. Watch out.
Otonashi: That's what he said, and Yuri just proved it.
Angel: Are there two Hinata-kun's?
Otonashi: Y-Yeah... that's right.
Angel: Is there a chance that there's more than three of him?
Otonashi: Huh? Oh, uh... it's possible.
Angel: I'm sorry to hear that.