Days with My Stepsister Light Novel Reading Order (Where the Anime Ends, the Spin-Off, and the Manga)

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This is the easiest reading order on the site and I still get asked, because the series exists in four formats and the volume numbers don’t line up between any two of them. So here’s the whole thing, once, with the parts I actually have opinions about marked.

→ Grab Volume 1 on Amazon

The main novels

Eighteen numbered volumes in Japan from MF Bunko J, seven in English from Yen On with the eighth landing November 10. You read them in order. There’s no “volume 4.5” or prequel, the numbering is honest, which after the Rebuild World numbering situation I appreciate more than I should.

The rough shape, for the English volumes, since that’s what I’ve read. Volume 1 is the setup, the parents remarry and the two of them agree to stay out of each other’s way, and then 2 is exams and the first time Saki asks for help. Two is slow. I’ve said this elsewhere and I’ll say it again, it’s the one people bail on, and I nearly did, and the only reason I didn’t was that I’d already bought 3 in the same order. Three is the summer at the bookstore and Shiori’s observation about Saki running herself into the ground, and honestly I could not tell you much more about 3 than that, it’s the one that blurred. Then 4, the “Big Brother” business and the kitchen-table admission at the end, which is where the anime stops. After that it gets lighter for a book, 5 has the first date and Halloween, and then 6 is winter and a conversation about the future that I did not see coming from a series with these covers. Seven is Valentine’s and a school trip to Singapore and the series finally gets out of the apartment for a while, which it needed.

The chapters are dated, which means the volumes map onto a calendar. Seven volumes is roughly one school year. I mention this cause it changes how you read them: you can pick up volume 5 after a six-month break and know exactly where you are, it’s October in the book and the characters tell you so. I did exactly that this summer and it was painless, which I can’t say about most series I’ve lapsed on. One translation thing I keep meaning to check: I have a memory of the date headers being formatted differently in volume 1 than in the later ones, Japanese order in the first book and month-first after, and I’ve never gone back to confirm it, so treat that as a rumor I started.

Beyond 7 I can’t help you, cause I don’t read Japanese and I’ve stayed off the fan translations on purpose. The subreddit knows. I don’t want to.

If you watched the anime first

Start at volume 5, and read it soon after, while the finale’s still in your head. The first chapter of 5 is dated a few weeks after where the show stops, so there’s no gap to fill, the two of them are still standing in the kitchen, more or less, deciding what the admission actually changes.

The Studio Deen adaptation from summer 2024 covers the first four volumes in twelve episodes, and it covers them well, better than a show with that pace had any right to. The last stretch is compressed, volume 4 gets less room than 1 through 3 did, and there are small cuts throughout that you’d only notice with the book open. So the honest advice is the annoying advice: start at volume 1 anyway, cause the thing the anime can’t do is the dual point-of-view diary structure, where you get the same scene from Yuuta’s head and then Saki’s. That structure is most of why the books work. You’ll be rereading a story you know for four volumes to get it, and some of you won’t, and that’s fine. Volume 5 is a perfectly good starting point and the book catches you up on where things stand in the first chapter without making a production of it.

I started at 1 myself after the finale and I’m glad I did, but I also had a free weekend and no plans.

The “another days” side book

There’s one, from February 2025. It’s Japan-only as of this writing. Yen On hasn’t announced it and I wouldn’t hold my breath, side books get licensed when the main series is a hit and this one is a quiet seller. It’s a Shiori book, from what I understand, with the author’s commentary on each anime episode bolted on, which is a strange combination and exactly the kind of thing I’d import if I could read it. I can’t. I imported the Hiten art book instead, which requires no reading and looks great on a shelf.

Where it goes in the order, if you can read it: after the anime, and after whatever main volume you’re at. It’s not a prerequisite for anything. It came out between volumes 13 and 14 in Japan.

The manga

Five volumes out here, more in Japan, I’d have to look. It runs behind the novels by a lot, the fifth book is somewhere in the volume 3 or 4 material. It’s a faithful adaptation and the art is pleasant, but it’s the format least suited to this story, because the story is two people thinking different things about the same conversation and a comic has to pick one face to draw.

If you’re a manga-first reader, same advice as the anime crowd: the novels start at 1, and the manga doesn’t substitute for any of them. If you just want the manga, read the manga, I’m not the manga police, but you’ll finish it in an afternoon and be at roughly where the anime ends, and then you’re reading the novels anyway.

The YouTube channel

Optional. The series started as a YouTube channel in 2020, short voiced scenes with the same cast the anime later used, and the novels grew out of it in 2021. The channel’s on indefinite hiatus now, per the author. The shorts are pleasant and they’re not canon in any way that matters, the novels rewrote and expanded everything, so I’d treat them as bonus material for after you’ve read a few volumes and want to hear the voices. I watched maybe a dozen. I remember a scene about who gets the bathroom first in the morning and almost nothing else. If you want them, the channel’s still up and subtitled, and the early ones are a minute or two each, so it’s an afternoon, not a commitment. I’d do it after volume 2, when you know the voices well enough to have an opinion on the casting.

One more thing I forgot

Audiobooks exist, four of them from Yen Audio, and they go in the same order as the books, which wasn’t obvious to the person who emailed me about it, so I’m saying it. I’ve only done the first one, on a long drive, and the two-narrator setup works better than I expected. I expected this post to be two paragraphs when I started it. It’s not.

One thing I don’t know and would like to: whether Yen On’s pace holds through the back half. They’ve been doing two or three a year and the gap to Japan is eleven volumes and growing. I had a theory in 2023 that they’d speed up once the anime aired, like they did with a couple of other series. They didn’t.

→ Grab Volume 1 on Amazon