During this scene, Shouya tells something like "Ore wa saa..." to Shouko, which I believe translates to something which the subtitles show as well, "You see, I...". But while completing the sentence, he falls, which leads to him being unable to complete it.

Nowhere in the movie further, is mentioned about this thing (at least I haven't noticed it :B).

Is there any sort of official statement on what he might've wanted to say?