I saw the "official" whatsit spammed the upload section to temporarily destroy the Updated section. I haven't been reading the series here, but I had it tagged as a reminder. I've dropped it from here.
This bad thing about Shimahara-sensei is that he gets an idea, then runs out of steam. Though his ecchi "Show Me Your Panties" manga apparently got an anime.
I understand the thought process behind changing the English to Japanese. The difference is pretty much everyone in Japan takes English classes. So they would likely be able to read it.
I'm not sure. I think it might actually be the bear, but it could be AIri acknowledging his feelings without embarrassing herself or letting him know that she knows.