Concise grammar textbook

Hello,

I studied Japanese with a teacher for 3 years a few years ago, and I am now living in Japan for a year. I have a good reading/oral understanding, but I forgot every grammar point, so talking is hard. I would like to refresh my memory and read a concise summary of every grammar point of JLPT N5/N4. If the textbook or the series of textbook continue to more advanced topics, it would be best (I don’t need really basics reminders like what particles are and would like to quickly move to advanced subjects). Since I already know a lot of vocabulary/kanji, I would like to focus on grammar alone and learn quickly.

This is more preference than requirement, but I like to have lessons and exercises separated (even in different books). I also want to follow the advice of \[A Year to Learn Japanese\]([https://docs.google.com/document/d/10bRzVblKVOsQJjTc2PIi1Gbj\_LrsJCkMkh0SutXCZdI](https://docs.google.com/document/d/10bRzVblKVOsQJjTc2PIi1Gbj_LrsJCkMkh0SutXCZdI)) to read the lesson and do exercises a week later.

I looked at some books recommended here, but I can’t imagine myself studying something like “A Dictionary of Basic Japanese Grammar”: I really need short lessons that talk on a specific point and not an entire subject with examples mixed in it (I haven’t read it, simply looked at the structure and felt despair).

For reference, I use wanikani to learn kanji, and I already have a lot of vocabulary that I remember from my old lessons. I can watch some Anime without subtitles or read a chapter of a manga in 30 min. But most of the things I don’t understand are due to grammar/conjugation that I don’t know, and not due to vocabulary/reading/hearing.

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PS: Love all the resources available here, thanks everyone!