Honey, I Rose up From the Dead

はてなブログ is a similar blogging platform where people talk about random stuff too. i've used it less so i know less about it but there's some fun reads in there

アメーバ is another blogging platform but ive never been on it i just know it because it's kinda well-known

NHKハートネット (specifically the みんなの声 section) is a cool forum-like place where they ask people to share their experience with certain topics, usually about their 悩み, and people have very interesting stories to tell

青空文庫 is pretty famous so you mightve heard of it already but it's a big digital japanese library, it has a lot of classics and fables and stuff like that. i remember reading 走れメロス off there a while ago

this one's not quite the thing you'd read everyday but ひきこもり村 is a forum for ひきこもり and many of the posts (at least last time i looked) show a very human look into everyday people's lives and can be pretty philosophical

and this is just a gigantic archive of this one japanese counselor's online diary entries from 1999-2010 which i just find fascinating to sift through

also, this is a PS since it was mentioned in your original tags, but i was able to download the honto app and i dont live in japan?? i went to this link on my phone and downloaded it from there

Pixiv might be most known for art but many also publish stories and short manga on there.

Tree-novel is similar to Syosetsu. People can publish their own writing, be it essays, short stories, novels, etc.