The elementary schoolers Yuuta and Yui had their body swapped when Yuuta fell down from a tree. It's already been three years, and now they're in middle school. How will they co-operate in dealing with this as they grow up? 2mk
9 Volumes (Complete)

This series has a strong premise, but fails to explore the idea in any interesting way.
Not your average body swapping manga where the characters involved will blush and try to take advantage of each other bodies...
It's definitely a REAL problem for both of them need to tackle.
We will get to see how both of them living and grown up through each other life.
Dont worry...there will be romance(and lot of confusion lol) , mild drama(my opinion) and certainly a character growth...
But there is an issue.. couple of chapters before the ending, I don't feel satisfied.. There's like something was missing or not explain enough.. Maybe the author dont know how to flesh out that part. I don't know.
This is a must read..
As others have said, the manga is a refreshing look at the premise of body swapping that doesn't dip into fanservice, but instead deals with some of the difficulties that come out of swapping lives for so long. I do feel that the ending was rushed. There were so many last minute developments that got no time to play out and would have been just as interesting as the rest of the series. Despite the rushed-feeling ending, I still think the manga did well for such an ambitious premise, and even though I would have gone a bit deeper into some of the aspects that the manga chooses to leave unexplored, it was worth reading.
First thought: personally, body swap of different gender doesn't click much with my usual taste.
Afterthought: I have no regrets. From just a "favorite", it has grow even bigger to my liking.
I actually like that the story never strays the two main characters (make it a trio with Kazuma, a best friend and protector), although they will experience different things with different classes, friends etc, in the end it all comes back the two of them. Maybe I could say this manga is the good example of "you don't always need skinship to show romantic affection towards one another".
There is no unnecessary drama or draggy love triangle/rival plot. I really love how the story focuses on their personality growth (including puberty and such), especially since they swapped bodies for 7+ years. The personalities of the characters are refreshing too--in fact, their course of action feels realistic (although body-swapped definitely ain't realistic, of course) and less whiny, like how people suppress their emotion as to not destroy the current happy bond, or how someone starts to wish irrationally because they don't want things to change, for example.
My only dissatisfaction would be that there is no enough extra after the ending, lol! I need more stories on them because romance doesn't really appear until.... chapter 30 and so? That's halfway to the end of the series X'D
Do not bother reading it, not until it has been completely scanlated. We are close to the end and the last scan release was 2018-08-26. So it cannot be that many more chapters left.
I wish I had waited. Most likely I will read it again when the final chapter comes. It's good enough for a re-read.
Like many of the other reviewers I am not big on the gender bender/body swap genre. I find most of the time that it brings about unneeded ecchi romcom. This is different. The character development of the two MCs both as themselves and coming to is very gradual. In actuality a lot of what happens seems realistic enough
aside from them not developing feelings for anyone or each other until very late (40 chapters or so) Good read very touching.
I still feel like Kazuma is hiding a way for them to swap back and not that he wants to be the only one to help them - with Koizumi and her novel, he seems to have found the same way back in middle school(forgot chapter)
I'm not usually a fan of these ridiculous cliche yet surreal situations in manga, but this particular work is uniquely written. It utilizes the body-swap setting to touch upon various topics of adolescence and overall coming of age. It is a very touching manga, and in my opinion the best cross-dressing/transgender/body swap manga out there. Worth a read even for the skeptics.
I have this really strict policy about not reading on going series because without knowing the end it just bothers me to no end. But there are times when I just break that rule and this is one of those. GOD!!! I have read this three times from start till the 45th chapter, and every time I lie to myself that I will wait for the series to end. This is just so lovely <3 <3 <3.
This reminds me so much of Hourou Musuko. And it's not just the art work but the ambiance and characterization as well. Though Hourou Musuko is way much more mature and serious.
Side note: I will write a proper review once the series ends, for now I just want express my utter love for it. I just pray that Masayoshi is able to complete this. I mean it's been 5 years and 7 volumes. I know it can take up to one and a half year to publish just 1 volume some times, and then you have manga like HiatusXHiatus too.So, yeah, hoping to read the end.
This manga is astonishing. It takes the super cliched premise of the body swap, and tears out the ending.
There are no wacky hijinks. No embarrassing compromising moments. Just the sad depressing daily life of two kids that have had their lives and families ripped away from them and are stuck living out each other's identities. What should have been a funny short story has become the miserable daily life of two transgender children that can't live with their own families, be themselves at school, or even pursue a love life. Years continue to , but they cling to hope of returning to normal, and so they continue the masquerade, terrified of screwing up each other's lives if they dare to drop the act.
The daily struggles are surprisingly lifelike, and very relatable. In addition to coping with transgender life and losing their identities, they face the confusion and hurt and thrills of growing up. Only, they're growing up in the wrong body, and neither of them are living the childhood they were meant to have.
Yuuta cringes when he isn't acknowledged as a boy. But he takes it in stride.
Yui finds herself torn up inside over a love that seems hopeless when he doesn't have the body of the girl she really is.
Their tears and struggles to keep hold of who they are and keep themselves secret, living one another's lives, make Bitter Change one of the most compelling manga stories I've ever read.