I've finished reading this online elsewhere and I'll try and sum up my feelings about it without giving away any spoilers. If you're interested in the topic it's worth reading but I have issues with how it played out
First of all it feels slow and talky, I know this is a common problem with Manga but it does seem to go over the same issues again and again without reaching a solution
Secondly as it's set in Japan it feels like a really repressive society with strict rules and limited choices. Later on this does get compared to the outside world when a minor character makes a trip abroad. Thirdly it has that annoying habit of mixing up gender identity with sexual preference which are clearly two different things
Essentially this is a story about puberty and the big changes that entails and asks what if you could choose to grow up as either a man or a woman? Don't expect any deep or life changing answers to that question