The following links in the first post are outdated: can we fix them?
Aoi Tori
Aoi Tori publish books for older children. Once you start to tackle “real books”, try checking out their publishing line; they’ll still be hard but you can be reasonably confident they’re among the easiest options out there.
Most of their books have one or more sequels: reading these will allow you to read faster as you get used to the writing style and encounter fewer new words, and you’ll consolidate the vocabulary and grammar patterns you do meet.
FloFlo (see below) has a number of Aoi Tori books; if you pick one of these you can utilise FloFlo to help with the vocabulary. The Pick a Book page can be sorted by medium and number of unique words to help you find something suitable (hover over a title to see the cover and look for the blue Aoi Tori style - e.g. Porepore Nikki, Kiri no Mukou no Fushigi na Machi, Fushigi Koshoten and Tokimeki Toshokan).
The first post is a wiki so you can edit it yourself (just hit “Edit” at the bottom). Having said that, it’s possible that you need to reach “Member” status first in the forums to be able to do that, but reading and liking plus an occasional post for a few days should get you there super quickly.