Ikko, the writer, recently was on a radio show where he was interviewed and answered some fans' questions.
When did he decide to change the direction -> after he tried introducing more characters via the 4koma (TomoMote?)
It's hard to come up with character episodes but at the same time not really
When did Nemo's deal about being a seiyuu and an otaku become a thing? -> He had it in mind lightly from the beginning, but didn't force himself to use that setting then. But it manifests in how Nemo has anime-like hair (he designed Nemo) and the artist added in more details
While not something especially shared with the artist, every character does have a few character settings in his mind (TN: That's likely why characters are mostly so consistent!)
Back in highschool he was a moody depressed kid but the delinquents and teacher mistook it as him being a serious student
Any chapters that (not necessarily Watamote) he particularly likes? -> the Lotte collab one. It was effortless to write.
Last year in June/July the Lotte Marines were losing so badly and so often he didn't watch them at all
Do the different personalities between Ikko and Nico affect the manga? -> maybe in some of the actions characters take and smaller details. Sometimes Nico the artist will say that "this character won't say this", but sometimes she'll just go with it. She doesn't really do so for dirty jokes. Ikko jokes that she just ignores them now. Does she do it for Katou? -> yes
Will it end with graduation? -> Well that'll probably be the case, don't you think?
Maybe with her getting a boyfriend.... -> (Laughs)
Any notifications for fans -> not really
