I actually didn't know this was shounen-ai when I started reading it, so I was surprised when the story went in the direction it did. Even so, as a person who doesn't usually read this type of manga, I found it to be fairly pleasant, if not perfect.
Now the story is pretty much as the synopsis implies, our main character Migiwa asks out Ren, who he believes to be a girl, only to find out he's a guy. What the synopsis does not include is how Ren, with help from his loving sister and boyfriend, learns to accept his gender identity. Without spoiling anything, the story is about his attempt to come to terms with himself and how he feels more than anything else, and I found it fairly pleasant overall, if somewhat one-dimensional and a tad rushed. I feel they had more opportunities to explore the challenges transgender people face in reality, but at least they addressed the topic.
The art is standard, very reminiscent of some yuri I've read in all honesty. It was pleasant to look at but nothing that'll win awards any time soon. The characters all look very feminine and I think that's what the author was going for.
The characters themselves are a bit flat and archetypal, but in a story with just 6 chapters, what really can you expect? Although I do commend the somewhat taboo topic of transgenderism that takes a central role in both Ren and his sister, it makes for a different type of manga.
Overall, I enjoyed this manga for what it was worth. I didn't really expect what I got but I didn't leave disappointed by any means. Although a 5/10 may look harsh, I actually tend to give lower scores on manga than many people, so I really don't give that number with negative connotation. Was it perfect? No, but it's an interesting read, even if you're not into shounen-ai like me.