When I first read this manga, I didn't really like it. I'm not a fan of polyamory relationships. But when I re-read it some time later, I found myself liking it instead. The reason I didn't like it was because I ended up rooting for only two of them. When I had rid myself of those thoughts I started thinking deeper about their relationship and came to like it as it is - as three people together and not just two.
If you want to enjoy this manga, you'll have to accept their relationship as it is. Or else, you'll be disappointed. If you dislike polyamory relationships in the first place, the risk is high that you will not enjoy this manga.
There are things I do not like about this manga too, such as
the way Mine got involved in the whole relationship between Take and Hiroi, it was kind of forced (not completely, since Mine decided to be with them himself) so it left a bad taste in my mouth. Also the almost forced double penetration, but at least Hiroi apologized about it later.
Another weakness it has is its conclusion. It doesn't feel completely resolved (or satisfying for that matter).
I definitely think this is a good read. The best part of it is their interesting relationship. If you like polyamory, smut (with threesomes) and unusual BL, you'll probably enjoy it. Just don't end up rooting for two of them.
I recommend reading psychedelics after this if you want to understand their relationship better, as the mangaka herself explained it better there. And the drama cd is also godly, so listen to it.