Can you add language as language as a filter for NU main page updates. All I can see is genres and tags unlike the series finder/ranking, having language as a possible filter.
You can use this in the meantime http://www.novelupdates.com/ntype/web-novel/ http://www.novelupdates.com/ntype/light-novel/
Go to your Profile > Settings > Enable Origin Tagging (Color) While it won't remove Chinese and Korean (and other) novels from the updates' listing, it'll make it much easier to spot Japanese novels.
This has been rejected by Tony. Basically, he wants people to be open to trying different things. (Though, I get where you're coming from.)
Hmmm I understand . . . I just don't think it is the right time for me for other countries novels . . . but i do read korean manhwa . . .
Awwww. I'm in the position where I've tried and I really can't get into CN/KR novels. So they go immediately into my hide list now. A lot of really bad JP novels go into that list also. I was really waiting for that feature too since it seems like there's always one/two new CN novel a day that keep getting into my releases home page