Renzu-sou no Sankaku is a fairly simple story. There are no crazy twist and turns and I would say overall it's pretty average. This is not to say that I didn't get any enjoyment out of the read, it was just that, everything that happened was very predictable. If you are brand new into manga as I am, I think it's a nice little story. But if you've read lots of manga, I think you will feel extremely underwhelmed with everything.
P.S. Sorry if this review sucked, it's hard for me to put my thoughts into words sometimes..
